sentences:  Bilateral military cooperation deepened under the Ronald Reagan administration in the 1980s.In 1981, U.S. Secretary of Defense Caspar Weinberger and Israeli Minister of Defense Ariel Sharon signed the Strategic Cooperation Agreement, establishing a framework for continued consultation and cooperation to enhance the national security of both countries.In November 1983, the two sides formed a Joint Political Military Group, which still meets twice a year, to implement most provisions of the MOU.