Gold prices rose after U.S. President Donald Trump and Iran agreed to a two-week ceasefire to finalize talks on ending the war that has upended global markets. Bullion climbed to above $4,800 an ounce, extending a 1.2% gain from the previous session. Trump said in a social media post that he had agreed to suspend bombing less than two hours before a self-imposed deadline to wipe out Iran's "whole civilization," adding that the reopening of the Strait of Hormuz was a key condition for the pause. Iran said safe passage through the strait was "possible"…