"Military power is the least likely instrument of national power to be successful if you decide to use it. A corollary truth with great relevance to Cuba is that sanctions, embargoes, closing embassies and withdrawing ambassadors, the silent treatment, branding other countries as evil and advocating and supporting regime change—all of these methods, even if actually backed by strong military power and the threat to use it, rarely work and, even when they appear to do so, the results they produce are usually negative and even when they are positive, are almost never long-lasting."