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Colorado congressional leaders sound off after North Korea completes another nuclear test

DENVER -- Colorado's congressional leaders took to Twitter on Sunday to vent their frustration over North Korea's latest nuclear test and outlined what they think needs to happen moving forward.

North Korea claims it successfully detonated a hydrogen bomb.

While outside sources have not been able to confirm it was a hydrogen bomb, the U.S. Geological Survey confirmed seismic activity in the area at the time of the apparent explosion.

Colorado Republican Sen. Cory Gardner issued a statement Sunday, calling for North Korea to be removed from the United Nations.

"Now is the time to take unprecedented steps to stop North Korea,” Gardner said. "This latest nuclear test by Kim Jong Un may be the clearest sign that we have seen that they are ready and willing to start a nuclear war that would lead to unimaginable destruction and loss of life on the Korean Peninsula."

Colorado Democratic Sen. Michael Bennet tweeted out his sentiments Sunday as well.

"North Korea poses a grave threat to our nation's security and to global stability and norms," Bennet said. "[The President of the United States] must acknowledge [the] gravity of [the] situation, demonstrate leadership & articulate strategy to address threat alongside int'l partners."

Metropolitan State University of Denver professor Robert Hazan said the latest test is frightening, but he remains hopeful an attack will not happen.

"The fact that North Korea has been unstoppable at this point in terms of how it's moving forward is a danger, is alarming," Hazan said.

Hazan said the key is to find a creative diplomatic approach that goes beyond issuing sanctions.

"This is perhaps the time, enough already, this is the time that our leaders have to address this issue directly. And it has to be through diplomacy. This is perhaps a situation where there is not an alternative," Hazan said.

He believes the key to easing tensions with North Korea is to solve long-standing tension between North and South Korea.