The United States was the leader not only in arms sales worldwide, but also in sales to nations in the developing world, signing $29.6 billion in weapons agreements with these nations, or 70.1 percent of all such deals.The study found that the larger arms deals concluded by the United States with developing nations last year included a $6.5 billion air defense system for the United Arab Emirates, a $2.1 billion jet fighter deal with Morocco and a $2 billion attack helicopter agreement with Taiwan. Other large weapons agreements were reached between the United States and India, Iraq, Saudi Arabia, Egypt, South Korea and Brazil.