Putin's brought back the country via oil , investments and selling weaponry and military equipment...both of which is always on world demand. This is why the US is fighting so against him now...also because of his ties with Europe....oil pipelines "hardwire" countries to be sure!
I think people are having difficulty realizing they are not dealing with a stupid man...he was an attorney...knows how laws work Internationaly and certainly has made it obvious he will use these to his advantage...and is doing just that.