Obama was in Strasbourg, France, on Friday for a NATO summit and did not arrive in Turkey for the final leg of his trip until Sunday.

The Saudi paper reported the suspect, who was carrying an Al-Jazeera TV press credential in the name of "M.G.," confessed to authorities after his arrest that he and three alleged accomplices plotted to stab Obama with a knife during the Alliance of Civilizations Summit in Istanbul, which Obama attended on Monday evening. The U.S. officials confirmed those allegations, but stressed to CNN that the information provided by the man is still being verified.

And, then, there is the Incirlik Air Base in southern Turkey, which serves as logistics hub for missions in Iraq and Afghanistan. There's also the fact that Turkey's proximity to the central-Asian countries that are rich in raw materials makes it an important transit hub in the energy supply.

Then, of course, there's the issue of Iran. Ankara nurtures strong ties with the country, meaning that Turkey could play a role in facilitating new diplomatic overtures between Washington and Tehran.

Turkey's government has already helped to organize talks between high-level officials in Pakistan and Afghanistan and to negotiate a cease-fire in the Gaza conflict.

According to poll figures, more than half of all Turks think Obama is the most trustworthy foreign statesman

America's reputation has suffered major damage in Turkey, particularly as a result of its disastrous invasion of Iraq. When Obama was elected president, polls indicated that only 9 percent of Turkey's population approved of Washington's policies. America's efforts to aid Turkey's ambition to become part of the EU have impressed few Turks, particularly since progress has been so sluggish.

"Obama should treat Turkey as more than a Muslim country," says Soner Cagaptay, an expert on Turkey at the Washington Institute for Near East Policy. As he sees it, it was a good idea for Obama to visit Turkey right after attending meetings with NATO and EU representatives as a way of underscoring the country's close ties with the West.

last year, Swiss mediators helped Turkish and Armenian diplomats hammer out a comprehensive agreement that would envision a historic coming to terms with the events of 1915 -- as well as to clear the path for the resumption of diplomatic relations between Turkey and Armenia.

Mr Obama has pledged substantial economic assistance for Pakistan - more than $1bn annually over the next five years - but the money will depend on the army's performance against the Taleban and al-Qaeda.

The BBC's Barbara Plett in Islamabad says President Zardari has now told the two US envoys that this is not good enough.

His statement after the meeting read: "Pakistan... needs unconditional support by the international community in the fields of education, health, training and provision of equipment for fighting terrorism."

"Pakistan is fighting a battle of its own survival," his office quoted him as telling Mr Holbrooke.

Our correspondent says his statement revealed the frustration and resentment about the aid conditions - which reflect American distrust of the Pakistani army. The conditions strengthen Pakistani perceptions of its army as a mercenary force doing American bidding, she adds.

Pakistani Foreign Minister Shah Mahmood Qureshi said: "We can only work together if we respect each other and trust each other."

Mr Qureshi admitted there were differences on the issue. "We did talk about drones, and let me be very frank - there is a gap. There is a gap between us and them, and I want to bridge that gap."

Washington and Tokyo are seeking a strong response, but Beijing and Moscow have called for restraint.

Susan Rice, the US envoy to the UN, called Pyongyang's move a "clear-cut violation of [resolution] 17-18", while her Japanese counterpart said Tokyo was seeking a "clear, firm and unified" response.

There was no general agreement at the council on whether North Korea was in breach of the resolution, let alone on whether it should be punished, our correspondent says.

"The US strongly supports Turkey's bid to become a member of the European Union," he said. "Europe gains by the diversity of ethnicity, culture and faith - it is not diminished by it. And Turkish membership would broaden and strengthen Europe's foundation once more."

Soli Ozel, an analyst at Bilgi University in Istanbul, said Obama had pressed "all the right buttons". "It looked at both sides of Turkey's identity, secular and Islamic," he said.

So today, I state clearly and with conviction America's commitment to seek the peace and security of a world without nuclear weapons.

To put an end to Cold War thinking, we will reduce the role of nuclear weapons in our national security strategy, and urge others to do the same

I'm not naive. This goal will not be reached quickly -- perhaps not in my lifetime. It will take patience and persistence.

Make no mistake: As long as these weapons exist, the United States will maintain a safe, secure and effective arsenal to deter any adversary, and guarantee that defense to our allies -- including the Czech Republic. But we will begin the work of reducing our arsenal.

Countries with nuclear weapons will move towards disarmament, countries without nuclear weapons will not acquire them, and all countries can access peaceful nuclear energy.

Then there is Cyprus, but the real problem here is between Turkey and the European Union. Europe wants Turkey to open its ports and airports to the Greek Cypriots. Turkey wants Europe to ease the commercial isolation of the Turkish Republic of Northern Cyprus in exchange, but the Greek Cypriots veto this. The United States can offer its support and its good offices, but it does not have much leverage over either the European Union or the Greek Cypriots. This is also broadly true of Turkey's EU entry negotiations.

A final item is the Nabucco pipeline bringing Central Asian gas to Europe via Turkey. Both America and Turkey would like to see it built. The question, however, is who will pay for it? Neither America nor Turkey has much spare cash right now.

Esta medida, que sería sobre todo un "gesto" de Washington hacia América Latina, opuesta radicalmente al embargo norteamericano, afectaría a un millón y medio de cubanoamericanos.

Es precisamente aquí donde está el problema. Mucho antes de que ganara Obama, el dirigente histórico de la revolución Armando Hart dijo claramente: ''Si cumple su promesa [de aliviar el embargo], nacerá una nueva etapa en el combate ideológico entre la revolución cubana y el imperialismo. En ella (...) será necesario el diseño de una nueva concepción teórica y propagandística acerca de nuestras ideas y su origen''. Y añadió: ''Una amplia migración con distintos objetivos puede venírsenos encima y para ello debemos prepararnos culturalmente''.

En realidad, el reto es doble. El turismo, con ingresos brutos de unos 2.000 millones de dólares y 2.350.000 visitantes anuales, es el segundo aportador de divisas al país, después de los servicios médicos y educacionales a Venezuela y otros países, calculados en 6.000 millones.

El turismo supone más ingresos que las exportaciones de azúcar, níquel y tabaco juntas y Cuba necesita ese dinero. Diversos estudios calculan que el primer año del levantamiento de la prohibición podría viajar a Cuba un millón de turistas norteamericanos, y hasta tres millones anuales en los años siguientes.

“It’s a setback,” Jonathan McDowell, a Harvard astronomer who tracks satellites and rocket launchings, said of the North Korean launching. He added that the North Koreans must now find and fix the problem. “The missile doesn’t represent any kind of near-term threat.”

The United States Northern Command, based in Colorado Springs, issued a statement on Sunday that portrayed the launching as a major failure. It based its information on a maze of federal radars, spy ships and satellites that monitor global missile firings.

The command emphasized that “no object entered orbit,” apparently a reference to both the rocket’s third stage as well as the supposed satellite.

North Korea’s public portrayal of the event as a complete success was similar in its celebratory tone to the happy note it struck in 1998 after having failed to loft a satellite into orbit.

A general rule of engineering is that failures reveal more than successes. If so, North Korea — which has now test-fired three long-range rockets, each time unsuccessfully — is learning a lot about limitations.

“It’s not unusual to have a series of failures at the beginning of a missile program,” Jeffrey G. Lewis, an arms control specialist at the New America Foundation, a research group in Washington, said in an interview. “But they don’t test enough to develop confidence that they’re getting over the problems.”Dr. Lewis added that an influential 1998 report by Donald H. Rumsfeld, before he became secretary of defense in the Bush administration, argued that the North Korean rockets might be good enough to pose a threat to the United States, even without flight testing. “But given that both versions of the Taepodong-2 have failed now,” he said, “we have very little confidence in the reliability of the system.”

In August 1998, North Korea’s first attempt at launching a long-range rocket, the Taepodong-1, managed to scare Japan but failed to deliver a satellite to orbit. The troubles continued in July 2006 when its second test of a long-range missile, the Taepodong-2, ended in an explosion just seconds after liftoff.

Igor N. Schcherbak, the Russian envoy, said that his country did not think it was a violation of the previous resolutions banning ballistic missiles, but he left some wriggle room by saying that Russia was studying the matter.

In his speech, Mr. Obama said he still planned to continue with missile defense, but he tied the need for such a system to any Iranian acquisition of nuclear weapons. Russia opposes locating a defense shield in Poland and the Czech Republic, as current plans call for, and Mr. Obama has responded by pushing the Russians to stop Iran from getting a nuclear weapon.

“Let me be clear: Iran’s nuclear and ballistic missile activity poses a real threat, not just to the United States, but to Iran’s neighbors and our allies,” Mr. Obama said. “The Czech Republic and Poland have been courageous in agreeing to host a defense against these missiles. As long as the threat from Iran persists, we will go forward with a missile defense system that is cost-effective and proven.”

According to diplomatic sources, the decisive impulse came from the US. Obama spoke with Gül and telephoned with Erdogan -- and was able to assuage their concerns. Erdogan said that Obama offered him certain unnamed guarantees -- allegedly they had to do with the Denmark-based Kurdish broadcaster Roj TV as well as with top NATO posts for Turkey.

Once the drama had come to an end, Rasmussen immediately sought to ease the tension, saying he would do "his utmost" for the partnership with Turkey. Relations with the Muslim world, he said, were decisive, and he even promised a review of the television station Roj TV -- a pledge apparently made at the request of Erdogan. Previously, Rasmussen had been unwilling to stop broadcasts in his country of the satellite TV channel.

North Korea claimed the Taepodong-2 rocket put an experimental communications satellite into orbit, where it is collecting data and broadcasting the Song of General Kim Il-Sung and the Song of General Kim Jong-il.

But US, South Korean and Japanese scientists say the only broadcasts are likely to be from the bottom of the ocean because the satellite failed to reach orbit.

The advance in North Korea's ballistic missile technology will raise concerns that the country could one day be capable of delivering a nuclear payload to the US or western Europe.It is likely to interest potential buyers from Pakistan, Iran and Syria, who have sent observers to previous launches.

So far, however, the US and its allies have been unable to persuade China and Russia that the act was a breach of UN security council resolution 1718, passed after long-range missile and nuclear tests in 2006.

The resolution bans Pyongyang from activities related to a ballistic missile programme and calls on the international community to stop trading weapons and luxury goods with North Korea.

China, a historical ally of and food supplier to North Korea, has called on all sides to remain calm."Our position is that all countries concerned should show restraint and refrain from taking action that might lead to increased tension," Zhang Yesui, the Chinese ambassador to the UN, told reporters.

Russia described the North Korean rocket launch as "regrettable", but stopped short of confirming whether the launch had violated existing resolutions."Before embarking on any actions, we should understand the character of this launch because, at this particular moment, we do not have a clearcut picture," Igor Scherbak, the deputy Russian permanent UN representative, said.

Speaking in Prague on Sunday, Mr Obama said Turkey's entry into the EU would help to consolidate its position as a Western nation.

"Moving forward towards Turkish membership in the EU would be an important signal of your commitment to this agenda and ensure that we continue to anchor Turkey firmly in Europe."

But French President Nicolas Sarkozy said it was up to the EU itself to decide who joined the bloc - and that he had always been personally opposed to Turkey's entry. "When it comes to the European Union it's up to member states of the European Union to decide," he told French TV.

German Chancellor Angela Merkel said that while close links with Turkey were important, its future status in Europe was still open for discussion.

The EU agreed to open accession talks with Ankara in 2004, but in recent years, correspondents say, Turkey has made little progress with democratic reforms which would improve its chances of membership.

As news of the missile launch was still being digested across the world, the 15-member UN security council met in closed session in New York to discuss a global response. The US, the UK and France were pushing for strong and united action, including new sanctions, but they faced resistance from the veto-wielding Russia and China, who were expected to block or dilute such moves.

Yukio Takasu, Japan's ambassador to the UN, called the launch "a clear crime". His French equivalent, Jean-Maurice ­Ripert, said: "We expect the council to unanimously condemn what has happened." Even so, the talks were expected to be long and difficult and the session ended early this morning without agreement on a reaction to Pyongyang's move.

"The test represents both a calling card for North Korea to the [US] administration and at the same time strengthens its bargaining position," said Han Sung-joo, a former South Korean foreign minister.