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
A Special Sesame Street Christmas losing to "Christmas Eve on Sesame Street". Both specials are now available on DVD. A Special Sesame Street Christmas A Special Sesame Street Christmas is a 1978 CBS Christmas special, made the same year as the better-known "Christmas Eve on Sesame Street". The special was first broadcast on Friday, December 8, 1978, at 8 PM ET on CBS, pre-empting "Wonder Woman" that week. Starring Leslie Uggams. The special features only three of the "Sesame Street" Muppets: Oscar the Grouch, Big Bird, and Barkley the dog. Barkley is played by gymnast Toby Towson. The puppet used for the special was different