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
Queen Victoria Street, London Queen Victoria Street, London Queen Victoria Street, named after the British monarch who reigned from 1837 to 1901, is a street in London which runs east by north from its junction with New Bridge Street and Victoria Embankment in the Castle Baynard ward of the City of London, along a section that divides the wards of Queenhithe and Bread Street, then lastly through the middle of Cordwainer ward, until it reaches Mansion House Street at Bank junction. Beyond Bank junction, the street continues north-east as Threadneedle Street which joins Bishopsgate. Other streets linked to Queen Victoria Street include Puddle Dock,