North Korean missiles are testing a stressed U.S. defense net

The latest North Korean missile tests come at time when the U.S. defensive shield is weakened, missile-defense analysts say, by this summer’s loss of a pair of warships specially outfitted for ballistic-missile defense.

Ukrainian government investigation concludes no engine transfers to North Korea

In a 1,300-word letter addressed to Poroshenko Tuesday, the Secretary of Ukraine’s National Security and Defense Council (NSDC) Oleksandr Turchynov laid out his government’s defense against a controversial New York Times story published last week.

No aerospace firms among Chinese, Russian entities Treasury just sanctioned for North Korea ties

The 10 companies and six individuals targeted by Treasury’s Office of Foreign Assets Control are alleged to have conducted business with North Korea in violation of United Nations’ sanctions aimed at preventing Pyongyang from funding its weapons programs.

Ukraine changes tactics on North Korea engine claims

In the days that followed Monday’s report in The New York Times that North Korea may have illicitly procured advanced Soviet-era rocket engines from Ukraine, the response out of the post-Soviet nation could best be described as trolling.

North Korea puts spotlight on U.S. space-based missile defense

North Korea’s threat to strike Guam with a salvo of ballistic missiles has raised the stakes for a U.S. missile shield some see as compromised by potentially exploitable seams in its all-important space layer.

STRATCOM’s No. 2 says clear space norms could help with North Korea

Speaking the day after a North Korean missile exploded within seconds of launch, U.S. Strategic Command’s second-in-command said March 23 that the reclusive nation still poses a security challenge, but one that the space domain can help meet.

North Korea poses unique challenges to space, experts say

U.S. near-peer adversaries such as China and Russia have incentives to remain peaceful in orbit. They may not want to create debris for fear of damaging their own satellites, or disrupt position, navigation, and timing services that they also use.

North Korean satellite still silent but no longer tumbling

Wednesday's briefing begins with word that North Korea's just-launched satellite has stabilized its orientation but isn't transmitting.

North Korean satellite said to be tumbling in orbit

Tuesday's briefing begins with a report that the North Korean satellite launched over the weekend is tumbling in orbit.

North Korea turns to ‘old workhorse’ rocket to repeat past success

North Korea's weekend rocket launch repeated earlier success rather than breaking new ground, using a nearly identical design from a 2012 launch, experts said.

North Korean rocket puts object into space, angers neighbors, U.S.

North Korea launched a long-range rocket carrying what it called a satellite, drawing renewed international condemnation just weeks after it carried out a nuclear bomb test.

Japan puts military on alert over North Korean satellite launch

Japan put its military on alert on Wednesday to shoot down any North Korean rocket that threatens it, while South Korea warned the North it would pay a "severe price" if it goes ahead with a satellite launch that South Korea considers a missile test.

North Korean rocket puts object into space, angers neighbors, U.S.

By Ju-min Park and Louis Charbonneau

SEOUL/UNITED NATIONS (Reuters) – North Korea launched a long-range rocket carrying what it called a satellite, drawing renewed international condemnation just weeks after it carried out a nuclear b…