Since Israel's founding in 1948, successive U.S. Presidents and many Members of Congress have demonstrated a commitment to Israel's security and to maintaining close U.S.-Israel defense, diplomatic, and economic cooperation. U.S. and Israeli leaders have developed close relations based on common perceptions of shared democratic values and religious affinities. U.S. policymakers often seek to determine how regional events and U.S. policy choices may affect Israel's security, and Congress provides active oversight of executive branch dealings with Israel and the broader Middle East. Some Members of Congress and some analysts criticize what they perceive as U.S. support for Israel without sufficient scrutiny of its actions. Israel is a leading recipient of U.S. foreign aid and is a frequent purchaser of major U.S. weapons systems. The United States and Israel maintain close security cooperation-predicated on a U.S. commitment to maintain Israel's "qualitative military edge" over other countries in its region. The two countries signed a free trade agreement in 1985, and the United States is Israel's largest trading partner. For more information, see CRS Report RL33222, U.S. Foreign Aid to Israel, by Jeremy M. Sharp.