By Bo Erickson, Steve Holland and Elwely Elwelly WASHINGTON, July 6 (Reuters) - President Donald Trump said on Monday the United States would either reach a deal with Iran or "finish the job," renewing his threat of military action as Tehran projects defiance following the funeral of Supreme Leader Ayatollah Ali Khamenei. Indirect U.S.-Iran talks ended last week without any public sign of headway toward a lasting peace, despite a 60-day ceasefire intended to create space for diplomacy following