Trump and Xi Jinping wrap Beijing summit. Here’s where U.S.-China relations stand

The two world powers are still divided on the war in Iran and Taiwan’s independence. U.S. President Donald Trump and Chinese President Xi Jinping wrapped up critical talks on Friday, claiming important progress in stabilizing U.S.-China relations even as deep differences persist between the world’s two biggest powers on Iran, Taiwan and more.Following the trip, Trump said he had not yet made a determination on whether a major U.S. sale of arms to Taiwan can move forward. Speaking to reporters as he flew back on Air Force One, Trump said he’d not decided on the sale, but he added, “I will make a determination.”Trump’s Republican administration has authorized the sale but it has yet to move forward. China opposes the deal and has suggested that Washington’s relationship with the self-governing island is the key factor in China-U.S. relations.Trump said Xi told him that he was opposed to Taiwan’s independence. “I heard him out,” Trump said. “I didn’t make a comment.”Trump also said he raised a potential three-way nuclear deal among the U.S., Russia and China. He wants each of the three countries to sign a pact that would cap the number of nuclear warheads in its arsenal. China has previously been cool to entering such a pact.Beijing’s arsenal, according to Pentagon estimates, exceeds more than 600 operational nuclear warheads and is far from parity with the U.S. and Russia, which each are estimated to have more than 5,000 nuclear warheads. But Trump suggested Xi was receptive to the idea.“I got a very a positive response,” Trump said. “This is the beginning.”The last nuclear arms pact, known as the New START treaty, between Russia and the United States expired in February, removing any caps on the two largest atomic arsenals for the first time in more than a half-century. As the treaty was set to expire, Trump rejected a call by Russia to extend the two-country deal for another year and called for “a new, improved, and modernized” deal that includes China.The Pentagon estimates China will have more than 1,000 operational nuclear warheads by 2030.Xi welcomed Trump at his official residence, Zhongnanhai, on Friday for their final engagement of the summit before the U.S. leader’s return to Washington. The leaders took a short walk through the grounds that feature ancient trees and Chinese roses, and they strolled through a covered passageway with green columns and archways painted with birds and traditional Chinese mountain scenes.Over tea and lunch, Trump and Xi — with top aides and translators in tow — huddled for nearly three hours of talks before the U.S. leader completed his three-day visit to China.“It’s been really a great couple of days,” Trump told reporters.Xi, for his part, called it a “milestone” visit. “We have established a new bilateral relationship, or rather a constructive, strategic, stable relationship,” he said.But the optimistic outlook collides with some difficult truths about the thorniest issues between the two superpowers.Beijing has shown little public interest in U.S. entreaties to get more involved in solving the conflict in Iran, even though Trump said in an interview with Fox News’ Sean Hannity that Xi had in their conversations offered to help. In recent weeks, the U.S. State Department has accused Chinese firms of providing satellite imagery to the Iranian government and the Treasury Department has moved to target Chinese oil refineries accused of buying oil from Tehran, as well as shippers of the oil.And the White House believes China can still do more to stem the flow of Chinese-made precursor chemicals into Mexico used to make illicit fentanyl that has wreaked havoc on many U.S. communities.Xi, meanwhile, warned Trump during private talks that their differences on the self-ruled island of Taiwan, if handled poorly, could hurtle the world’s dominant powers toward “clashes and even conflicts,” according to Chinese government officials.Trump appeared impressed by the bucolic grounds, remarking the roses were the most beautiful he had ever seen. Xi promised to send him some rose seeds.The compound is wrapped around two artificial lakes that had been built for the pleasure of emperors. Zhongnanhai is often compared to the White House, the Kremlin or South Korea’s Blue House. But unlike the other presidential residences, Zhongnanhai does not serve as the main venue for diplomatic visits. The invitation appeared to be an attempt by Xi to extend a personal touch to a U.S. leader who appreciates big gestures.“I think he’s a warm person, actually. But he’s all business,” Trump said of Xi in the Fox News interview. “There’s no games.”The Chinese government also bid farewell to Trump with great pomp.Chinese Foreign Minister Wang Yi saw a smiling Trump off at the airport. And schoolchildren dressed in Air Force One’s light blue and white colors waved American and Chinese flags in a coordinated movement as the U.S. president arrived to board the plane.