And the US knew that Russia was laying the ground to make a move on the strategically useful peninsula. Doing something about it is another matter.
Playing the petroleum card in world politics has a long history. But Russia's latest threat of gas cuts against Ukraine may finally push nations to embrace energy security and abundance as a peacemaking strategy.
Instead of ramping up threats over Ukraine and its Crimean Peninsula, all sides need to appreciate past achievements that drew them closer as peaceful nations.