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
Umbrella man (JFK assassination) said "I think if the "Guinness Book of World Records" had a category for people who were at the wrong place at the wrong time, doing the wrong thing, I would be No. 1 in that position, without even a close runner-up." Witt died on November 17, 2014. s Umbrella man (JFK assassination) The "umbrella man", identified by the United States House Select Committee on Assassinations in 1978 as Louie Steven Witt, is a name given to a figure who appears in the Zapruder film, and several other films and photographs, near the Stemmons Freeway sign within Dealey Plaza during