New Delhi, May 15 -- Presidents Donald Trump and Xi Jinpingwrapped 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.

Xi welcomed Trump at his official residence, Zhongnanhai, on Friday for the final talks 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 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 ...