Following World War II, the British withdrew from their mandate of Palestine, and the UN partitioned the area into Arab and Jewish states, an arrangement rejected by the Arabs. Subsequently, the Israelis defeated the Arabs in a series of wars without ending the deep tensions between the two sides. Israel has a technologically advanced market economy with substantial, though diminishing, government participation. It depends on imports of crude oil, grains, raw materials, and military equipment. Despite limited natural resources, Israel has intensively developed its agricultural and industrial sectors over the past 20 years. Israel imports substantial quantities of grain, but is largely self-sufficient in other agricultural products. Cut diamonds, high-technology equipment, and agricultural products (fruits and vegetables) are the leading exports. Israel usually posts sizable trade deficits, which are covered by large transfer payments from abroad and by foreign loans. Roughly half of the government's external debt is owed to the US, which is its major source of economic and military aid. The bitter Israeli-Palestinian conflict; difficulties in the high-technology, construction, and tourist sectors; and fiscal austerity in the face of growing inflation led to small declines in GDP in 2001 and 2002. The economy rebounded in 2003-05, growing at a 4% to 5.2% rate each year, as the government tightened fiscal policy and implemented structural reforms to boost competition and efficiency in the markets. The conflict with Lebanon in summer 2006 slightly dampened GDP growth, but continuing strong foreign investment, tax revenue, and private consumption levels helped the economy recover quickly.