Former Ambassador-at-Large Nathan Sales and former naval aviator Gregory Glaros discuss CENTCOM’s announcement that the U.S. blockade in the Strait of Hormuz is being ‘fully enforced’ on ‘The Sunday Briefing.

China stands to be impacted first, as the main buyer of Iran’s crude oil. But if the blockade drags on, its knock-on effects could impact the whole world.

What could the United States' blockade in the Strait of Hormuz look like and what impact might it have? Here's what to know.

Iran has offered to end its chokehold on the Strait of Hormuz in exchange for the U.S. lifting its blockade on the country and an end to the war.

President Trump last week announced an operation to guide ships through the Strait of Hormuz amid the Iranian blockade, and then two days later, he announced it would be paused. Energy Secretary Chris Wright told "Face the Nation with Margaret Brennan" that the U.

Iranian foreign ministry spokesman Esmaeil Baghaei said Iran is still looking over a proposal from the U.S. regarding an end to the war, adding that Tehran will not respond to “deadlines or ultimatums" and that those "mean nothing.

The U.S. conducted strikes against at least two locations in Iran on Thursday, a U.S. official said. The strikes in Bandar Abbas and Qeshm Island were defensive, the official said, and do not constitute a resumption of major combat operations against Iran.

US naval forces and Iranian forces exchanged fire in the Strait of Hormuz. President Donald Trump confirmed three American destroyers passed through the waterway under attack. Iran's IRGC claimed to have targeted US vessels after the US Navy fired on an Iranian oil tanker.