Pentagon says Ukraine sank former Russian flagship

• The sinking of the Soviet-era cruiser was a major morale boost for Ukraine, as it was involved in one of the famous early exchanges of the war.
• Ukrainian border guards defending Snake Island in February told the ship to "go f*ck yourself" in response to a call to surrender.

The big picture: Russia's defense ministry on Friday threatened to increase bombings on Kyiv if Ukraine continued to attack on Russian assets.

• It is currently unknown how many Russian sailors perished in the attack.

Go deeper ... CIA director: U.S. can't "take lightly" Russian nuclear threat in Ukraine