Iran and the United States continue to exchange messages through Pakistan, a senior Iranian source told Reuters today, noting that Tehran will not show flexibility as long as Washington continues to demand its “surrender under pressure.”

This source, who asked not to be named, said Qatar yesterday conveyed Tehran’s message to the United States and countries in the region on Monday that if Washington attacks Iran’s power plants, “the entire region and Saudi Arabia will be plunged into total darkness with Iran’s retaliatory strikes.”

He also warned that “if the situation gets out of control, Iran’s allies will also close the Bab el-Mandeb straits” that connect the Red Sea to the Gulf of Aden and the Indian Ocean.