Question: Where did the leader of the largest European country after the collapse of the country that denied anything more than an advisory role in the Korean war die?

<P0-S0> the removal of hungary's border fence with austria occurred in 1989 during the collapse of communism in hungary, which was part of a broad wave of revolutions in various communist countries of central and eastern europe. <P0-S1> the dismantling of the electric fence along hungary's 240 kilometres (149 mi) long border with austria was the first fissure in the ``iron curtain ''that had divided europe for more than 40 years, since the end of world war ii, and caused a chain reaction in east germany that ultimately resulted in the demise of the berlin wall. <SEP> <P1-S0> Naina Yeltsina was rarely seen in public. <P1-S1> She accompanied her husband on some of his foreign visits, including 1997 visits to Sweden, Finland, and a 1999 visit to China. <P1-S2> As a rule, Naina Yeltsina never interfered in her husband's political work. <P1-S3> A major public appearance was the state funeral of her late husband in Moscow in April 2007. <P1-S4> However, in the 1996 election campaign, she met with voters and gave interviews to the media. <SEP> <P2-S0> by the 1970s, both sides had become interested in making accommodations in order to create a more stable and predictable international system, inaugurating a period of détente that saw strategic arms limitation talks and the us opening relations with the people's republic of china as a strategic counterweight to the soviet union. <P2-S1> détente collapsed at the end of the decade with the beginning of the soviet -- afghan war in 1979. the early 1980s were another period of elevated tension, with the soviet downing of korean air lines flight 007 (1983), and the ``able archer ''nato military exercises (1983). <P2-S2> the united states increased diplomatic, military, and economic pressures on the soviet union, at a time when the communist state was already suffering from economic stagnation. <P2-S3> in the mid-1980s, the new soviet leader mikhail gorbachev introduced the liberalizing reforms of perestroika (`` reorganization'', 1987) and glasnost (``openness '', c. 1985) and ended soviet involvement in afghanistan. <P2-S4> pressures for national independence grew stronger in eastern europe, especially poland. <P2-S5> gorbachev meanwhile refused to use soviet troops to bolster the faltering warsaw pact regimes as had occurred in the past. <P2-S6> the result in 1989 was a wave of revolutions that peacefully (with the exception of the romanian revolution) overthrew all of the communist regimes of central and eastern europe. <P2-S7> the communist party of the soviet union itself lost control and was banned following an abortive coup attempt in august 1991. this in turn led to the formal dissolution of the ussr in december 1991 and the collapse of communist regimes in other countries such as mongolia, cambodia and south yemen. <P2-S8> the united states remained as the world's only superpower. <SEP> <P3-S0> Rank Country Area (km2) Notes Russia * 3,972,400 17,098,242 including North Asia Ukraine 603,628 This includes Crimea France * 551,394 643,801 when the overseas departments are included Spain * 498,468 505,992 when the Canary Islands, Ceuta and Melilla are included Sweden 449,964 6 Norway 385,178 This includes Svalbard and Jan Mayen 7 Germany 357,168 8 Finland 338,145 9 Poland 312,685 10 Italy 301,338 11 United Kingdom 248,532 1,976,102 when the British Overseas Territories are included. <P3-S1> 12 Romania 238,392 13 Belarus 207,600 14 Kazakhstan * 180,000 (est.) <P3-S2> 2,724,902 including Asian part 15 Greece 131,940 16 Bulgaria 110,994 17 Iceland 102,775 18 Hungary 93,030 19 Portugal 91,568 20 Austria 83,858 21 Czech Republic 78,866 22 Serbia 77,453 This excludes Kosovo 23 Ireland 70,273 24 Lithuania 65,300 25 Latvia 64,589 26 Croatia 56,594 27 Bosnia and Herzegovina 51,129 28 Slovakia 49,036 29 Estonia 45,339 30 Denmark 44,493 This includes Faroe Islands; 2,210,579 including Greenland 31 Switzerland 41,290 32 Netherlands 41,198 Excluding Caribbean Netherlands, Aruba, Curacao and Sint Maarten. <P3-S3> 33 Moldova 33,846 34 Belgium 30,510 35 Albania 28,748 36 Macedonia (Former Yugoslavian Republic) 25,713 37 Turkey * 23,507 783,562 including Asian part 38 Slovenia 20,273 39 Montenegro 13,812 40 Kosovo 10,908 Partially recognized state 41 Cyprus 9,251 42 Azerbaijan * 6,960 86,600 including Asian part 43 Luxembourg 2,586 44 Georgia * 2,428 69,700 including Asian part 45 Andorra 468 46 Malta 316 47 Liechtenstein 160 48 San Marino 61 49 Monaco 1.95 50 Vatican City 0.44 Total 10,141,183 ± 5,000 <SEP> <P4-S0> This ensured that Yeltsin would be the political leader of the Russian successor state following dissolution. <P4-S1> Prior to the dissolution of the Soviet Union, Boris Yeltsin had been elected President of Russia in June 1991 in the first direct presidential election in Russian history. <P4-S2> This situation resulted in political turmoil as the Soviet and Russian leadership wrestled for control, which culminated in the 1991 August Putsch, where the Soviet military attempted to overthrow Gorbachev. <P4-S3> Although the coup was ultimately averted, this situation contributed to rising instability in the Soviet Union. <P4-S4> By October 1991, as the USSR was on the verge of collapse, Yeltsin announced that Russia would proceed with radical reforms, including market - oriented reform along the lines of Poland's ``big bang '', also known as`` shock therapy''. <SEP> <P5-S0> The Chinese intervention in late October 1950 bolstered the Korean People's Air Force (KPAF) of North Korea with the MiG-15, one of the world's most advanced jet fighters. <P5-S1> The fast, heavily armed MiG outflew first-generation UN jets such as the F-80 (United States Air Force) and Gloster Meteors (Royal Australian Air Force), posing a real threat to B-29 Superfortress bombers even under fighter escort. <P5-S2> This known direct Soviet participation was a casus belli that the UN Command deliberately overlooked, lest the war for the Korean peninsula expand to include the Soviet Union, and potentially escalate into atomic warfare. <P5-S3> Fearful of confronting the United States directly, the Soviet Union denied involvement of their personnel in anything other than an advisory role, but air combat quickly resulted in Soviet pilots dropping their code signals and speaking over the wireless in Russian.