Hvaldimir unexpectedly headed south after several years in Norway, fueling concerns and efforts to bring him to safety. Experts say his story shines a light on how humans treat animals in general.
Citing satellite imagery, a submarine analyst says Russia's navy is deploying dolphins to defend a crucial base off Crimea. Russia and the U.S. have run marine-mammal training programs for decades.
Experts say the loss of the Moskva — the flagship of Russia's Black Sea Fleet — is significant both symbolically and militarily, even if it doesn't deal a decisive blow to Russia's overall operations.
