North Korea test-launched a suspected long-range missile designed to strike the continental U.S. on Thursday, South Korea’s military said, as the United States warned that North Korean troops in Russian uniforms are heading toward Ukraine in a likely move to augment Russian forces and join the war.

It comes a day after Seoul reported the North was making preparations to test-launch an intercontinental ballistic missile.

The test shows that Pyongyang is building weapons that "fire farther and higher", Seoul says.

North Korea has said it has tested an intercontinental ballistic missile, upgrading what it called the "world's most powerful strategic weapon", as Seoul warned Pyongyang could get missile technology from Russia for helping with the war in Ukraine.

North Korea said it has tested a new intercontinental ballistic missile.

North Korean leader Kim Jong Un ordered the missile test and was at the launch site, calling the launch “an appropriate military action” to show North Korea’s resolve to respond to its enemies’ moves that have threatened the North’s safety, according to its Defense Ministry.

North Korea launches ICBM, heightening tensions with U.S. and allies, amid reports of troops sent to support Russia in Ukraine.

Kim Jong Un watched as North Korea fired a new intercontinental ballistic missile for the furthest distance yet as the country claimed it was taking "appropriate military action" to protect its safety