By Jana Choukeir, Idrees Ali and Phil Stewart DUBAI/WASHINGTON, March 21 (Reuters) - President Donald Trump said the U.S. was considering "winding down" its military operation against Iran, as Iran and Israel traded attacks on Saturday and Iranian media said the nuclear enrichment facility in Natanz had been attacked.

Air Force A-10 Thunderbolt II close-air support aircraft, also called Warthogs, are hunting Iranian small vessels in the Strait of Hormuz.

A coalition of 12 Arab and Islamic countries denounces Iran’s attacks on civilian infrastructure, urges restraint, and warns of risks to regional security.

Trump jokingly referred to the initial strikes on Iran to the attack on Pearl Harbor while seated next to Japan's Prime Minister Sanae Takaichi.

The U.S. was informed about Israel’s plans to strike Iran’s massive South Pars natural gas field, but did not take part in it, according to an AP source who spoke on condition of anonymity.

A "terrorist network" funded and operated by Hezbollah and Iran has been foiled in the United Arab Emirates, according to a report. Israel launched fresh strikes against Iran while Kuwait, Bahrain and Saudi Arabia reported new Iranian aggression.

Iran retaliated after the attack on its Pars national gas field, causing major damage at an energy plant in Qatar, as oil approached $110 a barrel.

Iran has broadened its strikes on major energy facilities in the Middle East, eliciting strong warnings from Gulf Arab states that called it a dangerous escalation that threatened to draw them into direct combat with Tehran.