The Strait of Hormuz has been a flashpoint since the US-Iran war started more than two months ago after the US struck several key Iranian sites and Iran retaliated

President Donald Trump said the US Navy will start preventing ships from passing through the Strait of Hormuz, after US-Iran peace talks ended without agreement.

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

US President Donald Trump on Tuesday said that his Chinese counterpart Xi Jinping has not challenged the United States’ naval blockade around Iran in the Strait of Hormuz, expressing confidence in his personal relationship with the Chinese leader ahead of a planned meeting in Beijing later this month.

Iran’s state broadcaster IRIB said the US proposal “meant Iran’s surrender to Trump’s greed” and argued Tehran’s response “emphasises the fundamental rights of the Iranian nation”

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.