Gold edged lower on Monday as a firm dollar weighed on prices, with investors remaining cautious over potential Iranian retaliation following US strikes on its nuclear facilities. Spot gold slipped 0.1 per cent to $3,365.29 an ounce by 1003 GMT. US gold futures also fell 0.1 per cent to $3,381.30. Attribution: Reuters Subediting: M. S. Salama