Todor Zhivkov to 1988, Bulgaria won an unprecedented 153 Olympic medals and numerous European and world competitions in sports as diverse as volleyball, rhythmic gymnastics and wrestling. Dissent was punished under Zhivkov's rule. The CSS was a feared tool of control, and overt opposition largely stayed underground until the late 1980s. In 1978, the Bulgarian dissident Georgi Markov was assassinated in London by an agent who stabbed him with an umbrella tip which implanted a very small ricin ball. According to former KGB general Oleg Kalugin, this was requested by Zhivkov and either performed by the KGB or it assisted the CSS;
Waterloo Helmet Waterloo Helmet The Waterloo Helmet (also known as the Waterloo Bridge Helmet) is a pre-Roman Celtic bronze ceremonial horned helmet with repoussé decoration in the La Tène style, dating to circa 150–50 BC, that was found in 1868 in the River Thames by Waterloo Bridge in London, England. It is now on display at the British Museum in London. The helmet was dredged from the bed of the River Thames close to Waterloo Bridge in 1868, and in March of the same year it was given on loan to the British Museum by Thames Conservancy. In 1988 its successor body,