Russia has accused the United States of breaking an arms control treaty by selling two missile defense systems to Japan. Russia’s accusation comes after Japan said it would buy two of the U.S. missile defense systems, amid rising tensions in the region over North Korea’s nuclear program. This comes as Russia has also accused the United States of interfering in Russia’s upcoming presidential election, after the U.S. condemned Russia’s decision to ban opposition candidate Alexei Navalny from running.