US-Iran talks intensify as Trump shocks allies with surprise plan to send 5,000 more US troops to Poland amid war powers fight and oil market turmoil.

Iran weighs a new US proposal as Trump warns peace talks with Tehran are near breaking point, amid Hormuz tensions, food shock fears and tumbling oil prices.

The conflicting statements on key issues left it unclear if the two sides were any closer to a deal after renewed threats of escalation in recent days