The blockade, announced by U.S. Central Command, will affect vessels entering or leaving Iranian ports.
Iran's defiance came as Israel launched airstrikes on Tehran and as the United States deployed paratroopers and more Marines to the region.
Nuclear Testing Without Approval Act was introduced in the U.S. House of Representatives.
President Trump says the U.S. military struck three sites in Iran, directly joining Israel’s effort to cut off the country’s nuclear program.
Countries in the region condemned Israel's attack, while leaders around the globe called for immediate deescalation from both sides.
Putin’s endorsement of the new nuclear deterrent policy comes on the 1,000th day after he sent troops into Ukraine, on Feb. 24, 2022.
Nobel Peace Prize given to Japanese organization Nihon Hidankyo for its work against nuclear weapons
This year's prize was awarded against a backdrop of devastating conflicts raging in the Middle East, Ukraine and Sudan.
North Korea says it has test-fired a new tactical ballistic missile capable of carrying a huge warhead.
The top American and Russian diplomats have discussed arms control and other issues as Moscow signals readiness to include some of its latest nuclear weapons in the last remaining arms control pact between the two countries.
North Korean leader Kim Jong Un has supervised another round of artillery exercises.