Cecilia Lei

Navy reinforcements into the Middle East to support efforts near the strait.

Trump also urged other nations to join him in sending warships there to help secure the route.

In the meantime, he said the U.S.

would continue bombing the shoreline

and attacking Iranian boats.

But even if other countries joined, there's no guarantee that the Strait would reopen because of the risks facing traders.

Industry insiders have told Reuters that only Iran could offer enough reassurance to resume shipping.

Over the weekend, oil prices rose as the U.S.

targeted another site northwest of the Strait, Harg Island, a strip of land in the Persian Gulf.

It's a key processing hub for Iran's oil exports that's essential to its economy.

U.S.

struck the island, but they stopped short of hitting oil facilities.

Erin McLean, senior fellow at the Hudson Institute and a former Marine, explained the significance on CBS.

On Saturday, Iran accused the U.S.

of using bases in the United Arab Emirates to strike Harg Island and threatened to attack infrastructure in response.

In other updates over the weekend, the Pentagon identified the six US military members who died last week when a refueling aircraft crashed in Iraq under circumstances that are still being investigated.

Their deaths bring the total number of American service members killed to at least 13.

According to Iran's UN representative, at least 1,348 civilians in the country have been killed since the war began.

This Friday marks the start of spring, but it's not going to feel like that for millions of people across the country because of extreme weather.

To make sense of what's going on, we caught up with Seth Borenstein, a science reporter with the Associated Press.