While the U.S. military has the largest foreign presence and therefore represents the largest number of SOFAs, Britain, France, Australia, Germany,[2] Italy, Russia, Spain, and many other nations also deploy armed forces abroad and negotiate SOFAs with their host countries. In the past, the Soviet Union had SOFAs with most of its satellite states. While most U.S. SOAs are public, some remain secret. [3] WASHINGTON, March 20 (Reuters) – The United States said today it would immediately begin withdrawing the 4,000 U.S. troops deployed in Thailand after a new agreement on communications equipment and other sites was not negotiated. The political issue of SOFAs is complicated by the fact that many host countries have mixed feelings about foreign bases on their soil, and calls to renegotiate SOFA are often combined with calls for foreign troops to withdraw completely. Problems of different national practices may arise — while the United States and host countries generally agree on what a crime is, many American observers believe that the judicial systems of the host country give defendants much weaker protection than the United States and that the courts of the host country may be subject to popular pressure to find them guilty; In addition, U.S. soldiers who have been sent abroad should not be forced to give up the rights conferred on them by the Bill of Rights.