Israel reportedly struck the South Pars oil field Wednesday, the world’s largest oil 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.