I agree with Ron. We have no interests there worth defending. The Crimea was a part of Russia until 1954 when Khrushchev gave it to Ukraine as a gift and the Russian Black Sea fleet is based there. Why should we care what happens to a province that is ethnically predominately Russian and wants to be a part of Russia. The Europeans have more interests in the region than we do but they aren’t interested in imposing sanctions on Russia either.