Excerpts from Books and Wikipedia
"February 22– The Ukrainian parliament votes to remove President Viktor Yanukovych from office, replacing him with Oleksandr Turchynov, after days of civil unrest left around 100 people dead in Kiev, Ukraine.
February 26– The pro-Russian unrest in Ukraine leads to the annexation of Crimea by the Russian Federation and an insurgency in the Donetsk and Luhansk oblasts.
March 16– A referendum on the status of Crimea is held.
March 21 – Russia formally annexes Crimea after President Vladimir Putin signed a bill finalizing the annexation process.
March 24– During an emergency meeting, the United Kingdom, the United States, Italy, Germany, France, Japan, and Canada temporarily suspend Russia from the G8.
March 27– The United Nations General Assembly passes Resolution 68/262, recognizing Crimea within Ukraine’s international borders and rejecting the validity of the 2014 Crimean referendum." [Wikipedia]