The Russian government says it is considering reopening a military base in Cuba. Raúl Castro has said nothing about it to my knowledge. I do not think the Cuban government would accept the Russian proposal. I've argued in an op-ed (and will be doing so more in a forthcoming article) that the U.S. opening to Cuba increased U.S. leverage. Once the process got going, Cuba wants it to continue. The United States can reverse it at any time. President Obama has ignored the domestic criticism levied at him for the fact that Cuba did not make concessions for normalization, but he will act if the Russians actually open a base in Cuba.