U.S. President Donald Trump said an angry Israel had "violently lashed out" and attacked Iran's major gas field, a significant escalation in the U.S.-Israeli war, but said Israel would not make further such attacks unless Iran retaliated, Reuters reported. 

Wednesday's attack on the huge South Pars gas field drove oil prices higher and prompted a threat by Iran to attack oil and gas targets across the Gulf, while it fired missiles at Qatar and Saudi Arabia.

The escalation heightens the unprecedented disruption of global energy supplies that has raised the political stakes for Trump, who joined Israel in attacking Iran nearly four weeks ago, according to Reuters.