Sanctions haven't changed the regime in Cuba for over 60 years. The big problem with sanctions is that they aren't applied completely. The US refuses trade wi

Sanctions haven't changed the regime in Cuba for over 60 years. The big problem with sanctions is that they aren't applied completely. The US refuses trade with Cuba, but many other countries don't, so they aren't effective. The same is true with Russia: lots of countries (like China) still trade with them, and many more still buy their oil/gas.