US President Donald Trump said a month-long ceasefire with Iran was on “massive life support” as he rejected Tehran’s response to a peace proposal. The Iranian reply was a “piece of garbage”, Trump told reporters in the White House on Monday. “I didn’t even finish reading it.” The comments helped to push the price of Brent crude oil above US$106 a barrel on Tuesday. Trump is expected to discuss the war with Chinese President Xi Jinping in a Beijing summit on Thursday, as Iran’s 10-week shutdown.