DUBAI, United Arab Emirates -- The Strait of Hormuz, the narrow mouth of the Persian Gulf, again has become a focus of tensions as Iran prepares to launch a military drill that could see fire into a lane crucial for global shipping.

US President Donald Trump renewed threats to strike Iran if it does not agree to negotiate a new nuclear deal, as US forces conduct a multi-day air exercise in the Middle East, bolstering Washington’s military presence in the region.

Iran vowed Thursday to conduct live-fire military drills in one of the world’s most vital sea passages — which sees 20% of the globe’s oil transports — next week, just two

President Donald Trump said Iran is negotiating “seriously" with the U.S. as he keeps military options on the table and American naval forces move into the region.

Tensions have continued to rise between the two nations after the Iranian regime’s brutal crackdown on nationwide protests left thousands dead.

Two decades after American forces invaded Iraq, the circumstances are different but the failure is unmistakable.

U.S. Central Command warned Iran it will not tolerate "any unsafe and unprofessional behavior" near American forces ahead of live-fire naval drills.

President Trump’s “massive armada” of warships and fighter planes near Iran mirrors the military buildup of assets in the Caribbean as the president weighs greenlighting strikes against the Islamic Republic.

Iran and the US will hold talks in Oman on Friday on Tehran’s nuclear programme after the June war, as Trump warns of military action if diplomacy fails.