Nov. 21: President Viktor Yanukovych's government announces it is and is instead seeking closer co-operation with Moscow. Protesters take to the streets.
Nov. 30: Images of protesters bloodied by police truncheons spread quickly and galvanize public support for the .
Dec. 1: Aon Kyiv's Independence Square, known as the Maidan, the largest since the 2004 Orange Revolution. Activists seize Kyiv City Hall.
Dec. 17: Russian President Vladimir worth of Ukrainian government bonds and cut the price Ukrainians pay for Russian natural gas.
Jan. 22: Three protesters die during a manning barricades.
Jan. 28: In concessions to the opposition, the prime minister resigns and parliamentthat set off the violence.
Feb. 16: Opposition activists of Kyiv City Hall in exchange for the release of all 234 jailed protesters.
Feb. 18: Protesters and set fires outside parliament after it stalls on a constitutional reform to limit presidential powers. Riot police respond to the violence by trying to push protesters off Independence Square. At least 26 people die and hundreds are injured.
Feb. 20: Hours after a truce is announced, with government snipers shooting protesters from the roofs. Most of the 82 deaths occur on this day.
Feb. 21: Under a , protest leaders and Yanukovych agree to form a new government and hold an early election. Parliament slashes his powers and votes to free his rival, Yulia Tymoshenko, from prison. Yanukovych flees Kyiv after protesters take control.
Feb. 22: Parliament votes to remove Yanukovych and hold new elections. and addresses tens of thousands on the Maidan.
Feb. 23: Ukraine's parliament assigns presidential powers to its new speaker, Oleksandr Turchinov, an ally of Tymoshenko. The new authorities ask the West for loans to avoid an imminent default. Pro-Russia protesters start rallying against the new authorities in Crimea, where Russia has a major naval base.
Feb. 24: Ukraine's interim government draws up a Russian Prime Minister Dmitry Medvedev derides the new leaders in Kyiv as "Kalashnikov-toting people in black masks."
Feb. 26: Leaders of Ukraine's legislator Arseniy Yatsenyuk as prime minister. In Moscow, Putin orders major just across the border.
Feb. 27: Masked gunmen . Ukraine's government pledges to prevent a national breakup with strong backing from the West. Yanukovych is granted refuge in Russia.
Feb. 28: Ukraine says on the Crimean peninsula. Ukraine's parliament adopts a resolution demanding that Russia halt steps it says are aimed against Ukraine's sovereignty and territorial integrity. Turchynov says he has put armed forces on full readiness because of the threat of "potential aggression."
March 1: Russian troops take over Crimea without firing a shot. The Kyiv government and its Western supporters are powerless to react. U.S. President Barack to demand the troops' withdrawal.
March 2: for international help, fearing a wider Russian invasion. Supporters on both sides take to the streets of Ukrainian cities and of Moscow. The U.S. says it believes Russia has more than 6,000 troops in Crimea. The Group of Seven suspends preparations for June's G-8 summit in Russia.
March 3: Pro-Russian troops on the easternmost tip of Crimea, adding to fears that Moscow is planning to bring in even more troops.
