Bulgaria–United States relations to work. Bulgaria became a member of the Warsaw Pact on May 14, 1955. Though no Soviet troops were stationed on Bulgarian soil, in 1968, Zhivkov sent a Bulgarian division to join Polish, Hungarian and Soviet troops to crush a popular uprising in Prague. In 1978, the Bulgarian secret police were implicated in the assassination in London of Georgi Markov, a Bulgarian dissident who was a correspondent for the BBC World Service, Deutsche Welle radio and the U.S. sponsored Radio Free Europe. Markov was assassinated with a poisoned umbrella on September 7, Zhivkov's birthday. The rise of democratic movements across
Waterloo Bridge (1931 film) but mature ... so moving and believable as to send any audience out talking and raving in appreciation." On December 5, 2006, Warner Home Video released the film, together with "Baby Face" and "Red-Headed Woman", as part of a DVD box set entitled "TCM Archives – Forbidden Hollywood Collection, Vol. 1". Waterloo Bridge (1931 film) Waterloo Bridge is a 1931 American pre-Code drama film directed by James Whale. The screenplay by Benn Levy and Tom Reed is based on the 1930 "Waterloo Bridge" by Robert E. Sherwood. The film was remade in 1940 as "Waterloo Bridge" and as "Gaby" in