the military. In Sierra Leone, a group of young soldiers launch a military coup that sends president Joseph Saidu Momoh into exile in Guinea, and the National Provisional Ruling Council (NPRC) is established with 25-year-old Captain Valentine Strasser as its chairman and Head of State of the country. May May 1 – Lithuania introduces a new temporary currency, the talonas. May 5 Russian leaders in Crimea declare their separation from Ukraine as a new republic. They withdraw the secession on May 10. Armand Césari Stadium disaster in Bastia on Corsica: 18 people are killed and 2,300 are injured when one of the terraces collapses before a football match between SC Bastia and Olympique de Marseille. May 7 STS-49: Space Shuttle Endeavour makes its maiden flight, as a replacement for Space Shuttle Challenger. In the Sydney River McDonald's murders in Nova Scotia, Canada, three McDonald's employees are killed and a fourth is left permanently disabled during a botched robbery. May 9 The United Nations Framework Convention on Climate Change is adopted in New York. The Westray Mine in Plymouth, Nova Scotia, Canada, explodes, killing all 26 miners working the night shift. May 10 – Sweden wins the Ice Hockey World Championships in Czechoslovakia defeating Finland, 5–2, in the final game in Prague. May 13 – Falun Gong is introduced by Li Hongzhi in China. May 15 – The Collective Security Treaty Organization is established by six post-Soviet states belonging to the Commonwealth of Independent States (effective April 20, 1994). May 16–17 – Bosnian War: U.N. peacekeepers withdraw from Sarajevo. May 17 – Protests begin in Bangkok, Thailand, against the government of General Suchinda Kraprayoon, sparking a bloody crackdown. May 23 – Capaci bombing: A Mafia bomb on the autostrada in Sicily kills five people, including Italian anti-Mafia judge Giovanni Falcone. May 24 In Thailand, Suchinda Kraprayoon agrees to resign. Parliamentary election held in Burkina Faso, for the first time since 1978. May 30 – United Nations Security Council Resolution 757 imposes economic sanctions on Yugoslavia in an effort to end its attacks on Bosnia and Herzegovina. June June 2 – In a national referendum Denmark rejects the Maastricht Treaty by a narrow margin. June 3–14 – The Earth Summit is held in Rio de Janeiro. June 8 – The first World Oceans Day is celebrated, coinciding with the Earth Summit held in Rio de Janeiro, Brazil. June 10–26 – Sweden hosts