Watch a video that explains Ukraine's crisis in two minutes or read this quick article that covers the same material.
Ukrainians have been protesting since Nov. 21, when President Viktor Yanukovych rejected a deal for closer integration with the European Union, instead drawing the country closer to Russia. They are still in the streets in huge numbers and have seized regional government buildings in several parts of the country. In Kiev, the capital, clashes between protesters and security forces have become violent, killing several people. On Tuesday, the prime minister resigned. No one is quite sure what will happen next.
Via Seth Dixon