Speaking to members of the 23-nation Council of Europe, Mr. Gorbachev made no direct reference to the so-called Brezhnev Doctrine, under which Moscow had asserted the right to use force to prevent a Warsaw Pact member from leaving the Communist fold. He stated, "Any interference in domestic affairs and any attempts to restrict the sovereignty of states—friends, allies or any others—are inadmissible". The policy was termed the Sinatra Doctrine, in a joking reference to the Frank Sinatra song "My Way". Poland became the first Warsaw Pact country to break free of Soviet domination. In February 1986, in one of the first peaceful, mass-movement revolutions against a dictatorship, the People Power Revolution in the Philippines peacefully overthrew dictator Ferdinand Marcos and inaugurated Cory Aquino as president. The domino effect of the revolutions of 1989 affected other regimes as well. The South African apartheid regime and Pinochet's military dictatorship in Chile were gradually dismantled during the 1990s as the West withdrew their funding and diplomatic support. Argentina, Ghana, Indonesia, Nicaragua, South Korea, Suriname, Republic of China (Taiwan), and North and South Yemen, among many others, elected democratic governments. Exact tallies of the number of democracies vary depending on the criteria used for assessment, but by some measures by the late 1990s there were well over 100 democracies in the world, a marked increase in just a few decades. A wave of strikes hit Poland in April and May 1988. A second wave began on 15 August, when a strike broke out at the July Manifesto coal mine in Jastrzębie-Zdrój, with the workers demanding the re-legalisation of the Solidarity trade union. Over the next few days, sixteen other mines went on strike followed by a number of shipyards, including on 22 August the Gdansk Shipyard, famous as the epicentre of the 1980 industrial unrest that spawned Solidarity. On 31 August 1988 Lech Wałęsa, the leader of Solidarity, was invited to Warsaw by the Communist authorities, who had finally agreed to talks. On 18 January 1989 at a stormy session of the Tenth Plenary Session of the ruling United Workers' Party, General Wojciech Jaruzelski, the First Secretary, managed to get party backing for formal negotiations with Solidarity leading to its future legalisation, although this was achieved only by threatening the resignation of the entire party leadership if thwarted. On 6 February 1989 formal Round Table discussions began in the Hall of Columns in Warsaw.