Pressure is mounting on US President Donald Trump as he mulls a key announcement on whether Iran is complying with the nuclear deal. If, as US media predicts, he does not certify the accord, Congress will then decide whether to re-impose sanctions. He has until 15 October to decide. The historic international agreement eased sanctions on Iran in exchange for curbs on its nuclear activity. Mr Trump is under pressure both at home and abroad…"Iran nuclear deal: Trump under pressure as decision nears"