March 2: Ukraine appeals for international help, fearing a wider Russian invasion. Supporters on both sides take to the streets of Ukrainian cities and of Moscow. The Group of Seven suspends preparations for June's G-8 summit in Russia.
March 3: Ukraine says there are up to 16,000 Russian troops in Crimea. Russia says it has approved troop deployment at the request of Yanukovych. The main Russian stock index falls 12 percent; Russia's central bank raises its main interest rate 1.5 percentage points.
March 6: Crimea's parliament declares the region wants to join Russia and will let voters decide in a March 16 referendum.