The United States has a long and proud history of fighting for freedom and supporting human rights.  

Russia has attacked an independent and free democratic state. 

It has been documented that Russia is using cluster bombs on civilian targets including children, that they have thermobaric rockets and vacuum bombs ready to use.  This has changed the equation.

Though there is understandable concern for wider war and nuclear war, nevertheless the free world must do what it can to stop and prevent atrocities.  

The world, led by the United States and under the auspices of the United Nations, should take the minimal action of imposing a no-fly zone over Ukraine.  There are those who say this risks a greater conflict, but will Russia fight the whole world, united against it?  There is risk of greater conflict, but the moral risk of doing nothing in the face of cold-blooded murder is higher.