Brent crude futures fell 2.2% to $107.39 per barrel, while WTI slipped 0.2% to $112.28 amid Hormuz deadline request.
Pakistan's PM Shehbaz Sharif asked President Trump to extend the Strait of Hormuz deadline by two weeks and urged a ceasefire.
Iran warned it could target Saudi Aramco facilities and the Bab-el-Mandeb waterway if U.S. attacks continue, heightening regional tensions.
UN Security Council resolution on Hormuz was vetoed by China and Russia, leaving the waterway's security unresolved.