Story highlights

The President sat down with Chinese President Xi Jinping on Saturday afternoon

The United States and China are currently split on the best way to deal with North Korean leader Kim Jong Un

Hamburg, Germany CNN  — 

President Donald Trump has long said China is the lynchpin to solving North Korea’s saber rattling with missile tests. But his tact with the Asian superpower has run the gamut: He has thanked the Chinese for their support, argued they aren’t helping defuse the situation and then written them off as willing partners – all in the span of a few months.

On Saturday here in Germany for the G20, Trump urged action on North Korea as he met with Chinese President Xi Jinping.

“Something has to be done about it,” Trump argued ominously during the brief public portion of his meeting with Xi.

There will “eventually be a success” against Pyongyang, Trump said. “It may be longer than I like, more than you like, but there will be a success … one way or the other.”

Trump’s history with China – particularly on North Korea – will be brought to bear during the Xi meeting, their second sit down since Trump entered the White House in January.

Trump said at the start of the meeting that he and Xi had “developed a wonderful relationship.”

The President also addressed trade issues before his meeting with Xi.

“Trade, as you know, is a very, very big issue for the United States now. Because over the years and – it’s really been over a long period of time many things have happened that have led to trade imbalances. And we’re going to turn that around. And I know that with China in particular which is a great trading partner, we will be able to do something that will be equitable and reciprocal.”

North Korea stance changing?

Secretary of State Rex Tillerson insisted in a briefing with reporters Friday that the Trump administration’s “expectations are unchanged” on China’s willingness to help address the growing problem in North Korea.

“We have not given up hope,” Tillerson said. “I call it the peaceful pressure campaign. … This is a campaign to lead us to a peaceful resolution because, if this fails, we don’t have very many good options left.”

That is not the case Trump made last month.

“While I greatly appreciate the efforts of President Xi & China to help with North Korea, it has not worked out,” he tweeted. “At least I know China tried!”

Trump echoed that sentiment earlier this month when he tweeted, “Trade between China and North Korea grew almost 40% in the first quarter. So much for China working with us - but we had to give it a try!”

The President even suggested earlier this year that he was holding fire on China – by not labeling them a currency manipulator – because of their work on North Korea.

“Why would I call China a currency manipulator when they are working with us on the North Korean problem,” he wrote. “We will see what happens!”

The United States and China are currently split on the best way to deal with North Korean leader Kim Jong Un, whose recent test of what was believed to be an intercontinental ballistic missile – a significant step for the North Korean regime – has sent shock waves around Asia, Europe and the United States.

In response to the missile test, the United States and South Korea announced they held their own missile test to counter “North Korea’s destabilizing and unlawful actions.”

That response ran counter to what China and Russia had hoped the United States would do. In a joint statement, the two countries called on North Korea to stop nuclear tests and asked the United States and South Korea to stop future joint military drills.

“Our experience with China has been… a bit uneven,” Tillerson said Friday. “China has taken significant action, and then … they’ve paused and didn’t take additional action.”

He added, “We’ve remained very closely engaged with China, both through our dialogues that have occur