• GBP/USD -0.4% Mon as markets calibrate weekend U.S.-Iran developments

• GBP failure to hold above 1.3460 55-DMA will invigorate sellers

• Iran war re-escalation becomes genuine threat after peace talks fail

• WTI +8.5%, Brent crude +7.3% after Trump announces Strait of Hormuz blockade

• UK Feb GDP, industrial output, trade balance updates all due Thur

• Range Asia 1.33835-1.3442, support 1.3160 1.3040, resistance 1.3867 1.4250
GBP Daily 55-DMA

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