From The Economist, an analysis entitled “Putin’s Inferno.”

Despite talk of a truce between some of the participants, the horror could yet get much worse. The bloodshed will deepen the rifts in what has always been a fragile, complex country (see article). Outright civil war remains a realistic prospect. Immediate responsibility for this mayhem lies with Viktor Yanukovych, Ukraine’s thuggish president. But its ultimate architect sits in the Kremlin: Vladimir Putin.

Goes on to say the West, meaning the USA and the EU, need to act tough and resist Putin’s attempts to absorb Ukraine into the Russian sphere of influence.