Additional sanctions or shows of force are the most likely responses to North Korea's provocation.
Kim Jong Un had warned that the nation was close to test-launching a ballistic missile.
President Xi Jinping is overseeing an ambitious military modernization program that includes stealth jets and aircraft carriers.
The Kremlin is not concerned by a reported border deployment but parliament promises response.
Sanctions tell U.S. allies that America understands and condemns Russian action.
Putin is keeping an eye on proceedings and reports suggest Russian missile defenses in Crimea are at the ready.
John Bolton wants to bomb Iran and wage war against Cuba.
Moscow has been working on missiles to overwhelm defences.
Rostec says it logged thousands of suspicious cyber-incidents last year.
How should we retaliate for the missile strikes against U.S. ships?
Russia and Japan have pursued a diplomatic solution, but Moscow is shoring up defenses.
Iskander units were drafted in the exercise close to the Estonian border.
The missile was believed to be of intermediate range and was launched from the city of Kusong.
The Ministry of Foreign Affairs said Moscow is the only credible source of information.
Investigators told the victims' families that the rocket was fired from rebel-held ground.
South Korea accused North Korea of "totally ridiculing" the U.N.'s authority.
Kiev's military intelligence claims Russian strategic missile forces are carrying out drills.
North Korea is preparing to fight a nuclear war in the Korean peninsula against the USA and its allies.
U.N. Security Council to meet Tuesday to discuss the three ballistic missiles that hit Japan's air defense identification zone.