After pursuing a ceasefire in the Black Sea with Ukraine, Vladimir Putin launched a new nuclear-powered submarine in Murmansk.

In Egypt's Red Sea, a crew on a sightseeing submarine tour managed to escape when the vessel began sinking — but some of the tourists on board were not so lucky. As the BBC reports, authorities are questioning the crew of the Sindbad submarine after it foundered during a coral reef tour near the beach town of Hurghada in southeastern Egypt.

The coalition between the two universities was first established in 2017 through funding from the Office of Naval Research.

Imagery released by the U.S. Navy shows the aircraft carrier, USS Carl Vinson, was in the Sea of Japan near Russia earlier this month.

The Russian agencies, quoting documents associated with the launch, said the Perm is the first nuclear-powered submarine to be equipped with Zircon missiles as a standard feature.

The governor of the Egyptian Red Sea region visited a hospital treating survivors of a tourist submarine that sank on Thursday.

The British Royal Navy has laid the keel for its largest-ever nuclear submarine. Traditionally, governments have held ceremonies for the laying of the keel on notable projects, as it signifies the start of construction.