- The EU and Ukraine entered talks to bring Ukraine closer to Europe.
- Former Ukrainian president Viktor Yanukovych basically stated that they were having a hard time since the EU wanted two prisoners released in Ukraine (concerned that their imprisonment reflected deterioration of democracy and rule of law in Ukraine)
- In November, Ukraine decided to halt proceedings with the EU and move closer to Russia instead
- Late November, upset Ukrainians gathered in European Square in Kiev to protest the decision. Police moved in at the end of the month with tear gas and batons to move them out.
- Basically after that, things became a riot. Police and protesters died.
- After lots of protests, Yanukovych got Riot Police on the job, having snipers suppress the mobs.
- The Ukrainian parliament then ejected Yanukovych from his seat and he was forced to flee the country on February 23rd
- The incoming president, Oleksandr Turchynov, has stated the country will move towards the EU
- Unfortunately, the southern half of Ukraine (Crimea region) is very Russia leaning and has started revolting about THAT decision
- Militia took over the Crimea region. Their APCs sported Russian licence plates
- Russia began holding war games near the Ukrainian border. After all this, the Russian Senate approved the decision to move troops (currently ~16,000) into Ukraine. It should be noted that these soldiers are welcomed in Crimea, where the prevailing opinion has been to get closer ties to Russia.
So, yeah, that escalated quickly.
Here's a current list of known troop movements in the Crimea region
