Putin's claims of American Hypocrisy?

Putin's land grab in the Crimea is very similar to America's invasion of Mexico in the 1840's when President Polk decided to use force to acquire Texas, California, and portions of Arizona and New Mexico. .Polk claimed that it was America's "Manifest Destiny" to own that land. He sent troops into Mexico and forced the President of Mexico to sell the land to America at the point of a gun. This caused an International uproar and our actions were broadly censured. The invasion was preceded by Mexico filing complaints against American citizens who were illegally migrating into Texas -which at that time was owned by Mexico.

We sometimes wonder why other Nations accuse us of hypocrisy. Our blatant land grab in Mexico, our invasion and occupation of Iraq and Afghanistan are examples, as is our claim that we alone should be allowed to own nuclear weapons. We are after all the only Nation who so far has used nuclear weapons to kill thousands of non-combatant citizens.