A military investigation has concluded that two U.S. Navy SEALs drowned as they tried to climb aboard a ship carrying illicit Iranian-made weapons to Yemen because of glaring training failures and a lack of understanding about what to do after a fall into deep, turbulent waters.

A top Russian environmental official said Monday that the thousands of dead seals that washed up on Russia’s Caspian Sea coast likely died from oxygen deprivation.

(CNN) - Closing arguments are expected to begin Monday in the trial of Chief Special Warfare Operator Eddie Gallagher, a Navy SEAL accused of stabbing an ISIS prisoner to death, among other violations of military law. Other SEALs who served alongside Gallagher testified they saw Gallagher stab the ISIS fighter. SEAL Special Operations Chief Craig Miller testified he saw Gallagher stab the prisoner "on the right side of his neck, toward the jugular vein." He posed for pictures with prisoner's body, witnesses saySeveral SEALs testified during the first week they saw Gallagher take pictures with the body. Former SEAL Dylan Dille told the court he saw Gallagher pose for individual and group photos with the body.