If you ask me, Obama's action on Cuba was a master stroke, and full of foresight. He has undercut Putin's ability to use Cuba as a pressure point against the U.S. going forward and has, in a single action, transformed a net negative for the U.S. and Cuba into a net positive for its government, people, and businesses.
Isolationist America's foreign policy and standing in the world has been further emasculated in the process. Conservative political pundits in the U.S. criticize President Obama for failing to act in a more decisive manner to stem the tide. They remain delusional in their belief that anything the U.S. can do will make a difference.