The South Pars gas field is central to the energy supply of Iran, which was already suffering blackouts before the war.

Iranian state media say Israel attacked Iran's South Pars gas field, part of the the largest in the world. It's shared with Qatar to the south across the Persian Gulf.

Airstrikes hit a major energy facility in Qatar after Tehran vowed retaliation for an earlier strike on infrastructure of the vast South Pars offshore gas field, Iran’s biggest source of natural gas.