Pyongyang has long coveted an advanced air-defense system to guard against missiles and war planes from the United States and South Korea.

A top South Korean official says Russia has supplied anti-air missiles to North Korea in exchange for it sending troops

Russia provided North Korea with missiles in exchange for sending troops to Ukraine, according to a senior South Korean official.

The United States believes that Russia fired a never-before-fielded intermediate-range ballistic missile on Thursday in its attack on Ukraine, an escalation that analysts say could have implications for European missile defense.

Russian President Vladimir Putin warned the United States and Ukraine’s other partners that the weapon could be deployed against their interests as well.

NATO and Ukraine will hold emergency talks on Tuesday after Russia launched a hypersonic missile attack on the city of Dnipro.