Jong-nam was killed by a chemical attack in Malaysia last year.

According to reports, he was killed inside the Kuala Lumpur airport after two women attacked him from behind and smeared his face with a VX nerve agent.

The women have been arrested since. Pleading innocence, the under-trial murderers said that they thought it was a prank for a TV show.

State Department spokeswoman Heather Nauert said, "This public display of contempt for universal norms against chemical weapons use further demonstrates the reckless nature of North Korea and underscores that we cannot afford to tolerate a North Korean WMD program of any kind."

Nauert said that the US is going to issue fresh sanctions on the secretive Asian regime in response 

In the past, the US has accused Kim and his men of carrying the attack. Similarly, the North Korean government has rejected any involvement.

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