Over the years, Japan has also taken a number of steps to allay the Pentagon`s fears of traveling to the United States for its safety. In 1977, it took steps to make its equipment and communications interoperable with those of U.S. forces in the country, and it began participating in joint planning and training exercises. In 1983, U.S. Presidents Ronald Reagan and Nakasone agreed on an agreement that Japan would exclude arms technology exports to the United States from its arms export ban. Japan has also gradually overcome its reluctance to send troops abroad. In 1992, after serving the Gulf War, it passed a law allowing its troops to participate in UN peacekeeping operations. Since 1992, Japanese troops have carried out such missions in Cambodia, the Democratic Republic of the Congo, East Timor, Mozambique, the Palestinian territories and Rwanda. . . .