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
Commercial Street, London Ibis London City budget hotel (opened 2005), and beyond that, at the junction with Whitechapel High Street, the Relay Building, a 21-storey residential development (completed 2014). On the eastern side of Commercial Street stands Toynbee Hall, the university settlement founded in 1884. The nearest London Underground station is Aldgate East, at Commercial Street's southern end. Shoreditch High Street London Overground station is close to the northern end, by the former Bishopsgate Goods Yard. London Liverpool Street is a National Rail and London Underground interchange, a short walk to the west. Commercial Street, London Commercial Street is an arterial road in