Former Russian President Dmitry Medvedev on Thursday told U.S. President Donald Trump to remember that Moscow possessed Soviet-era nuclear strike capabilities of last resort after Trump told Medvedev to "watch his words". -snip- "If some words from the former president of Russia trigger such a nervous reaction from the high-and-mighty president of the United States, then Russia is doing everything right and will continue to proceed along its own path," Medvedev said in a post on Telegram. Trump should remember, he said, "how dangerous the fabled 'Dead Hand' can be," a reference to a secretive semi-automated Russian command system designed...