By Trevor Hunnicutt, Andrea Shalal and Joe CashWASHINGTON/BEIJING (Reuters) -The United States and China have extended a tariff truce for another 90 days, staving off triple-digit duties on each other's goods as U.

President Donald Trump has signed an executive order, delaying the U.S. deadline for higher tariffs on Chinese goods by another 90 days, the White House said.