Arzu Rezvani

and other nations to send their warships to the Strait of Hormuz to help secure the key shipping route.

The U.K.

's defense ministry says it's exploring its options.

But so far, no country has committed to Trump's call.

Since the start of the war, Iran has blocked some oil tankers and attacked cargo vessels trying to pass through the strait, which has led to a huge spike in global oil prices.

Nearly a fifth of the world's oil supply typically passes through this vital oil export route.

The waters off Iran's coast have become a strategic battleground in the war.

The U.S.

bombed military targets on Iran's Khark Island Saturday.

Trump said the U.S.

might hit the island again, quote, just for fun, if Iran continues interfering with ships passing through the Strait of Hormuz.

Arizu Razvani, NPR News, Erbil, in the Kurdistan region of Iraq.

Hark Island sits 15 miles off Iran's coast and is critical to Iran's oil infrastructure and the country's economy.

Roughly 90 percent of Iran's export crude oil passes through the island.

In a Truth Social post on Friday, President Trump said that while the U.S.

had hit military targets, he had, quote, chosen not to wipe out the oil infrastructure.

Trump added that he'd reconsider that decision if Iran continues interfering with ships passing through the Strait of Hormuz.

In response, Iran's military has threatened to turn oil and energy firms in the region that work with the U.S.

into, quote, a pile of ashes.

Oil prices have jumped more than 40 percent since the start of the war.