Oil prices climbed on Monday after the Barakah Nuclear Power Plant in the UAE's Al Dhafra Region came under a drone attack. Brent crude stood at $111.5, rising $2.23 or 2.04%, while WTI crude traded at $108.0, up $2.54 or 2.41%, around 7 am IST. "For Iran, the clock is ticking," US President Donald Trump said on Sunday.