sentences:  In 1988, Reagan and Israeli Prime Minister Yitzhak Shamir signed a memorandum of understanding to formalize and perpetuate the work of the bilateral US-Israel military, security and economic working groups.In an effort to prevent Israel from retaliating against Iraqi SS-1 Scud missile attacks during the Persian Gulf war of 1991, and thereby breaking up the US-Arab coalition, the US dispatched MIM-104 Patriot surface-to-air missile batteries to Israel.The effort met with very limited success, with less than 10% and perhaps as few as none of the Scuds fired against Israel intercepted successfully.