Mumbai, March 7 -- Gold failed to sustain at one-month highs as COMEX futures stayed under pressure in volatile trades. The metal had spiked to $5400 per ounce at the start of the month as safe-haven demand increased amid the escalating Middle East conflict with fresh missile and drone strikes across the Gulf, though the same tensions also lifted the dollar and weighed on bullion prices. The counter closed around $5180 per ounce, down 1.30% for the week. However, broad sentiments are supported for the commodity amid firm investment demand. World Gold Council or WGC stated that global gold ETFs added US$5.3 billion (bn) in February, extending their ninth straight month of inflows and marking the strongest two month start to a year on record....