Prior to the dissolution of the USSR, Boris Yeltsin had been elected President of Russia in June 1991 in the first direct presidential election in Russian history. This ensured that Yeltsin would be the political leader of the Russian successor state following dissolution. This situation resulted in political turmoil as the Soviet and Russian leadership wrestled for control, which culminated in the 1991 August coup, where the Soviet military attempted to overthrow Mikhail Gorbachev. Although the coup was ultimately averted, this situation contributed to rising instability in the Soviet Union. As the USSR was on the verge of collapse by October 1991, 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". Following Yeltsin's resignation in 1999, Russia's politics have since been dominated by Vladimir Putin, serving as either President or Prime Minister. Although the Russian economy has improved significantly under Putin's leadership following relative economic chaos under Yeltsin, Putin has also been widely accused of corruption, authoritarian leadership, and widespread human rights abuses.