S. Korea 'in talks to buy nuclear submarine' from US: reports 11/8/2017 8:51:26 AM   facebook Google+ ► Print US President Donald Trump (L) and South Korean President Moon Jae-In (R) at their joint press conference AFP, November 7, 2017  - South Korea is negotiating with the United States to buy nuclear-powered submarines to guard against threats from Pyongyang, local reports said Tuesday, as President Donald Trump said Seoul would buy 'billions of dollars' of US weapons. Nuclear-powered submarines can stay submerged for months, giving them a far greater range than their diesel-powered counterparts, and are also crucial to any seaborne nuclear deterrent. Such a purchase would redraw the balance of power in northeast Asia, and could trigger a regional arms race. Japan -- another US ally -- does not have nuclear-powered submarines, and is barred from having a military under its post-World War II pacifist constitution. And while China...