President Trump has one bright red line for Iran's nuclear program and some areas of flexibility as he weighs military strikes or a possible deal in the coming days.

Iranian state media reported the partial closure of the Strait of Hormuz on Tuesday for military drills in the waterway.

US warns Iran to reach a deal or face strikes as Tehran and Moscow announce joint naval exercises in the Sea of Oman.

The Iranian naval drill and the arrival of the USS Gerald R. Ford aircraft carrier near the mouth of the Mediterranean Sea underscore the tensions between the nations.

US President Donald Trump said on Thursday that Iran must make a "meaningful deal" in negotiations with Washington in the next 10 days or else "bad things happen", as he deployed warships, fighter jets and other military hardware to the region.

US-Iran tensions LIVE: US President Donald Trump launched a fresh threat on Tehran on Wednesday after mediatory talks between the two nations in Geneva. Trump said Iran would attract ‘bad things’ if it fails to strike a deal with Washington.

Washington has increased its military presence in the Middle East and is preparing contingency plans for possible action against Tehran, which has warned for a regional war in case of an attack from the US or its allies.

President Donald Trump faces one of the weightiest decisions of his second term as he orders the largest military buildup in the Middle East in 22 years.

DUBAI, United Arab Emirates (AP) — Iran held annual military drills with Russia on Thursday as a second American aircraft carrier drew closer to the Middle East, with both the United States and Iran signaling they are prepared for war if talks on Tehran’s nuclear program fizzle out.

Iran temporarily shut part of the key Strait of Hormuz as tensions with the US continue to mount. Tuesday’s move is the first time the Middle Eastern waterway has been closed since the 1980s, and came as Iran’s ayatollah issued fresh threats against the United States.