In a Truth Social post, President Donald Trump lashed out at Israel for its attack on Iran’s — and the world’s — largest natural gas field, the South Pars field in the Bushehr Province in southern Iran Wednesday. Trump wrote that the United States was not aware of the attack and that Qatar had nothing to do with it. He condemned Iran for striking Qatar’s liquefied natural gas field and warned that if Iran continued to retaliate against Qatar, the U.S. would destroy the remainder of the South Pars field, only 20 percent of which had been destroyed in the strike.

“Israel, out of anger for what has taken place in the Middle East, has violently lashed out at a major facility known as South Pars Gas Field in Iran,” Trump wrote. “The United States knew nothing about this particular attack, and the country of Qatar was in no way, shape, or form, involved with it, nor did it have any idea that it was going to happen. Unfortunately, Iran did not know this, or any of the pertinent facts pertaining to the South Pars attack, and unjustifiably and unfairly attacked a portion of Qatar’s LNG Gas facility.”

He added that if Iran “unwisely decides to attack a very innocent, in this case, Qatar — In which instance the United States of America, with or without the help or consent of Israel, will massively blow up the entirety of the South Pars Gas Field at an amount of strength and power that Iran has never seen or witnessed before.”

Israel reportedly struck the South Pars gas field Wednesday, the world’s largest gas field. Iran obtains 70% of its gas from South Pars and shares the massive field with Qatar, which condemned the strike. The field, located in the Bushehr Province in southern Iran, houses a facility that processes natural gas. Other facilities associated with the South Pars Offshore Gas Field and Asaluyeh Oil Industry were also struck, with several phases at South Pars now offline.

Iran has been developing infrastructure in the oil field since 1990. The authoritarian regime vowed to retaliate by attacking oil and gas production facilities in Qatar, Saudi Arabia and the United Arab Emirates, singling out Saudi Arabia’s SAMREF Refinery and the Jubail petrochemical complex, the UAE’s Al-Hasan Gas Field, and some of Qatar’s petrochemical plants, as well as a refinery there.

However, Israeli officials said earlier that the strike against the world’s largest gas field in Iran Wednesday was coordinated by the United States and Israel to signal a warning to Iran over its threat to the Strait of Hormuz.

The attack destroyed only part of the field, so officials estimate that this has decreased the natural gas available to the people of Iran by about 20 percent. This will have enough of an impact, according to one official, to increase internal pressure on the regime.