President Donald Trump is kicking off meetings with international leaders at the Group of 20 summit with a working dinner with Australian Prime Minister Scott Morrison.

Trump on Thursday congratulated Morrison on his "fantastic" re-election victory and says that although Morrison wasn't favored to win, he doesn't consider it an "upset."

Morrison praised the strong bonds between the U.S. and Australia. He said he will raise the issue of collateral damage from the ongoing U.S.-China trade war with Trump, but the leaders didn't discuss the issue with reporters present.

Asked whether his "America First" polices weaken U.S. ties with allies, Trump said the two countries have worked very closely together on trade issues. Trump also says he'd "like to" visit Australia to view the President's Cup golf tournament in December.

After the summit, Trump will go to South Korea where he'll address the standoff with North Korea over its nuclear weapons program.

The international visit comes days after Trump pulled back from the brink of armed conflict with Iran, and as he looks to de-escalate a year-long trade war with China. U.S. officials said Trump would also warn Putin against continued election meddling. (AP)