Watch this WEAPONS clip of Julia Garner & Josh Brolin 'til the end for a fright 😱 Own it on DVD, Blu-Ray or 4KUHD NOW! | Warner Bros. Pictures

Russia has recently unveiled several new nuclear-capable and nuclear-powered weapons that President Vladimir Putin says will be "important for the entire 21st century." CNN's Fred Pleitgen breaks down their capabilities. | CNN

President Donald Trump announced the United States' intention to restart testing nuclear weapons "on an equal basis" with Russia and China. CNN's Nic Robertson looks at the history of nuclear weapons testing in the US and explains what that would mean politically. Read more: https://cnn.it/4358PyY | CNN