North Korea could have up to 60 nuclear weapons by 2021, US think tank finds

North Korea is projected by the end of 2020 to have 25 to 50 nuclear weapons, and possibly as many as 60, according to a US think tank’s report on Pyongyang’s nuclear capabilities. David Albright, founder and president of the Institute for Science and International Security, a Washington-based security think tank, said on Tuesday the “worst case” estimate of 60 nuclear weapons would involve the operation of the Experimental Light Water Reactor, a type of thermal-…