Iran on July 19, 2019, said it seized a British oil tanker and its crew amid reports it diverted a second tanker toward Iran within hours of the seizure in a clear message to the UK and the US that it's willing to get aggressive in a feud over oil sanctions. But it may soon have to contend with heavy US and UK naval firepower already in the region.
The US sent its USS Abraham Lincoln aircraft carrier and attached strike group to the region in May 2019. This represents the world's most potent unit of naval power, with the aircraft carrier's formidable air wing, a cruiser, four destroyers, and support ships.
The USS Boxer, a smaller carrier for AV-8B Harrier jets and helicopters, is also operating nearby and said it recently downed an Iranian drone. Iran denied this and posted video of one of its drones landing to challenge the US's narrative, although it's unclear if Iran's footage proves anything.
The UK has the HMS Montrose on station, which immediately following the seizure of the tankers was broadcasting its location and sailing through the Strait of Hormuz. The UK has another two warships on the way.
Previously, the UK's Montrose got into a standoff with Iranian gunboats trying to veer an oil tanker called the "British Heritage" into Iran's waters. The Montrose aimed its 30 mm guns at the Iranian fast-attack craft swarming the tanker and warded them off.
Retired US Navy Capt. Rick Hoffman told Business Insider's Ryan Pickrell that the 30 mm guns, were the "perfect weapon" against these types of ships.
But the US's aircraft carriers can do better than perfect. With helicopter gunships launched off the Boxer or Lincoln, the US could easily destroy any number of Iranian fast-attack craft.
In June 2019, Iran shot down an expensive US surveillance drone with a surface-to-air missile. The Pentagon drew up plans for a retaliatory attack on Iran, but President Donald Trump said he canceled it upon hearing how many Iranians would die.
But now Iran is holding at least 23 sailors captive after seizing the vessel. The UK's top leaders on July 19, 2019, held an emergency meeting to decide how to proceed.
Iran frequently talks about sinking US aircraft carriers, and its navy holds the operational goal of destroying the US Navy, but Sim Tack, a researcher at Stratfor, a geopolitical consulting company, told Business Insider that the US had deployed its carrier smartly.
U.S. Navy aircraft carrier USS Abraham Lincoln.
"The US is being very smart about how it's deploying its carrier. It prefers to keep its carrier in the Arabian Sea rather than the Persian Gulf. There are more open waters there, so they're not putting themselves in the Persian Gulf where their movement is a lot more restricted."
Because of the long range of the US's carrier aircraft, the US can strike Iran from far off in the Arabian Sea without risking getting mined or submarine attacks that Iran may launch within their home waters, according to Tack.
"Iran doesn't have an air force of its own that's capable of withstanding these aircraft," Tack said. "That element of air defense is extremely outdated and incapable from Iran."
Additionally, US ships in the region have potentially more than 400 Tomahawk cruise missiles, which each have a range of greater than 1,000 miles. The US used these missiles twice in strikes against neighboring Syria.
It's unclear if the US or UK will launch a rescue mission to free the captive sailors, but the considerable naval firepower in the region means that Iran's attempts to hijack oil tankers could start a naval fight.
Commenting on the tensions in the region, Trump said on July 19, 2019, that US ships are "the most deadly ships ever conceived, and we hope for [Iran's] sake they don't do anything foolish. If they do, they're going to pay a price like nobody's ever paid a price."
This article originally appeared on Business Insider. Follow @BusinessInsider on Twitter.
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