It may seem the stuff of sci-fi novels, of the cloak-and-dagger rivalries that haven’t fully dissipated despite the historic U.S.-Cuban rapprochement two years ago that seemed to bury the weight of the two nations’ Cold War enmity. But this is Cuba, the land of poisoned cigars, exploding seashells and covert subterfuge by Washington and Havana, where the unimaginable in espionage has often been all too real.

Source: FBI baffled by unexplained ‘health attacks’ on Americans in Cuba – NY Daily News