(ABC NEWS) -- Kim Jong Un was briefed by a North Korean general on the country's plan to launch missiles toward Guam, according to South Korea's largest news agency, but the combative leader appeared to pause the heated rhetoric, saying he would watch "stupid American behavior for a bit longer."

"Dear Supreme Leader has spent a long time to review the plan to attack Guam by surrounding it and conferred with the leaders present," reads a translated statement by Yonhap, attributed to KCNA, the state news agency of North Korea.

The war planning came during the leader's visit on Monday to the the headquarters of Strategy Division of the North Korea's People's Army where he reportedly met with General Kim Rak Gyom. While there, Kim warned soldiers to stand ready to strike "at all times," according to the Yonhap report.

The order to his army was reportedly followed by more bluster but also a call for the U.S. to ease tensions.

"Dear Supreme Leader said that the Americans' reckless military confrontational behavior has ended up the U.S. trapping themselves with their own hands and are spending pathetic fate by weary minutes and seconds and that Dear Supreme Leader will watch such stupid American behavior for a bit longer,” KCNA said, according to Yonhap.

"The United States, which was the first to bring numerous strategic nuclear equipment near us, should first make the right decision and show through actions if they wish to ease tensions on the Korean Peninsula and prevent a dangerous military clash," Kim was quoted as saying.

When the preparation for battle was complete, Kim decided to take a photo with his soldiers.

"Dear Supreme Leader took a commemorative photo with the soldiers, who welcomed the Dear Supreme Leader with utmost excitement, to whom the Dear Supreme Leader responded by waving at them," KCNA reported.

Pyongyang's saber rattling comes a week after the North Korean army declared it would complete an assault to launch four intermediate ballistic missiles near Guam by mid-August. And it's one day after the U.N. passed sanctions to devastate the region; China on Tuesday announced it would phase out supplying North Korea with crucial coal imports.

Kim's rhetoric on Monday came shortly after Secretary of Defense James Mattis harshly warned North Korea of considering any sort of aggression against the U.S.

"If they shoot at the United States, I'm assuming they've hit the United States. ... If they do that, then it's game on," he said.