U.S. President Donald Trump inspects a guard of honor during a welcome ceremony at the Great Hall of the People in Beijing on Thursday. | Pool / via AFP-JIJI

U.S. President Donald Trump said his patience with Iran was running out after he discussed the costly and unpopular war with Chinese President Xi Jinping on Thursday and a ship was reported seized by Iranian personnel off the United Arab Emirates.

The White House said Trump and Xi had agreed during talks in Beijing on the need to keep the Strait of Hormuz shipping lane open. Iran effectively shut the waterway in response to U.S.-Israeli attacks which began on Feb. 28, causing an unprecedented disruption to global energy supplies. China is close to Iran and the main buyer of its oil.

The U.S. paused its attacks on Iran last ​month but began a blockade of the country's ports.…