At the heart of the country's problems is a looming economic crisis. Oil is the source of nearly 80 percent of government revenue, and it is quickly running out. There are few viable options for a sustainable post-oil economy, and Yemen is already the poorest country in the Arab world with an unemployment rate conservatively estimated at 35 percent. Yemen's pending economic collapse has been greatly accelerated by the civil war in Saada. Government forces have been unable to decisively put down the rebels in the north of the country, and there is no military solution to the conflict. The toll in Saada has been severe, with extensive damage to infrastructure and an estimated 175,000 internally displaced people. The conflict's strain on the Yemeni army has led to questions about the military's ability to simultaneously engage in other operations, including counterterrorism. The government is spending foreign currency reserves at an alarming rate, recently estimated at more than $200 million per month. Spending on the war will create a major budget deficit next year. Every dollar spent on the civil war is a dollar not spent on addressing the underlying causes of instability in Yemen. Yemen also is facing a growing secessionist movement in the south of the country. When the war in Saada subsides, it is feared that the secessionist movement will again flare up. The government does not control the entire territory of Yemen, and the emergence of additional areas outside of the capital of Sanaa's control will create more under-governed spaces that can be exploited by terrorist movements.