Reuters reported, citing the U.S. outlet Axios, on the 7th (local time) that the U.S. military attacked military facilities on Kharg Island, Iran's largest crude oil export base.
Iran's semi-official Mehr news agency also said that "multiple explosions were heard" on Kharg Island.
Kharg Island, located off southern Iran on the inner side of the Gulf (the Persian Gulf), is critical infrastructure that handles more than 90% of Iran's crude oil and petroleum product exports. If these facilities are hit, heavy damage to Iran's energy industry appears inevitable.
Earlier, President Donald Trump held a press conference at the White House and set 8 p.m. on the 7th (U.S. Eastern time) as the negotiation deadline, saying he would attack all power plants and bridges if the Strait of Hormuz is not opened.
The United States also said on the 14th of last month that it struck more than 90 military targets, including a naval mine storage facility on Kharg Island. At that time, it did not bomb energy facilities.