• AUD/USD flat Tue as markets remain wary of U.S.-Iran developments

• U.S. Vice President Vance heading to Pakistan for unconfirmed peace talks

• Pakistan optimistic despite reports Iran is still weighing attendance

• AUD tracks headlines, but eyeing 0.7250-85 resistance zone

• U.S. Mar retail sales due Tue; Apr S&P flash PMIs due Thu

• Range Asia 0.7171-82, support 0.6834 0.6660, resistance 0.7250 0.7283
AUD Daily 55-DMA

(James Connell is a Reuters market analyst. The views expressed are his own.)