COMEX gold and silver futures tumble further on Monday morning in Asia asdollar holds firmly around 99.50 mark as rising tensions in the Middle East boosted safe-haven demand for the currency. Elevated oil prices and inflation fearsare also weighing on the previous metals. US President Donald Trump has reportedly given Iran a 48-hour deadline to reopen the Strait of Hormuz or risk strikes on its energy infrastructure. Tehran also threatened to target US and Israeli assets across the region, including energy, IT, and desalination facilities, if its own infrastructure is hit. Currently, the yellow metal is near a three month low and down 4.67% at $4344.70 an ounce while silver futures are quoting at $65.20 an ounce, down 6.42%, its lowest level since first week of Feb.