The US military deployed a new submarine-launched low-yield nuclear weapon, something the Pentagon sees as critical to countering the threat posed by Russia's arsenal of smaller tactical nukes.
원문출처 : https://www.cnn.com/2020/02/04/politics/us-nuclear-weapon-submarine/index.html
원문출처 : https://www.cnn.com/2020/02/04/politics/us-nuclear-weapon-submarine/index.html