Trump criticises NATO, South Korea, Australia and Japan

But as he wrapped up his lengthy news conference on Monday, he also fumed about the lack of support from Pacific allies.

"You know who else didn't help us? South Korea didn't help us," Trump said. 

"You know who else didn't help us? Australia didn't help us," he added.

"You know who else didn't help us? Japan. We've got 50,000 soldiers in Japan to protect them from North Korea.

"We have 45,000 soldiers in South Korea to protect us from Kim Jong-un, who I get along with very well."

with AP