A look at the warships, jet fighters and missiles massing at Iran’s doorstep.

Trump has moved key warships and hundreds of fighter jets into the Gulf region as fears rise the US could launch strikes on Iran.

Dozens of fighter jets, including F-35s, F-22s, F-15s and F-16s, left bases in the U.S. and Europe and were spotted heading to the Middle East by the Military Air Tracking Alliance, a team of about 30 open-source analysts that routinely analyzes military and government flight activity.

A second American aircraft carrier moved closer to the Middle East Thursday, as President Trump remains noncommittal about whether he'll use force against Iran.

As the United States continues a significant military buildup in the Middle East, Iran has taken steps to signal its readiness for war, including fortifying its nuclear sites and rebuilding missile production facilities.

A second American aircraft carrier -- the USS Gerald R. Ford -- is heading toward the Middle East amid rising tensions with Iran, accompanied by destroyers and aircraft being redeployed from missions in the Caribbean region, a U.S. official told ABC News.

The talks come as the U.S. ramps up its military presence in the Middle East and Iran holds large-scale maritime exercises.