It's the 50th anniversary of the U.S. embargo of Cuba. I think Greg Weeks says it best:
There just isn't any intellectual defense of the embargo anymore. It is not the cause of Cuba's economic woes--Fidel Castro himself has said the economic model is broken--though it has made the lives of the average Cuban more difficult. It has not led to the ouster of the Castro regime. It represents limitation of the freedoms of U.S. citizens. It creates global sympathy for a small country perpetually bullied by Goliath.
None of these outcomes are good for the Cuban people, for U.S. national security or for the U.S. economy.