Watch as tsunami slams Russia's Kamchatka after 8.7 earthquake, first footage shows coast under water

A massive 8.8 magnitude earthquake struck off Russias Kamchatka Peninsula early Wednesday, setting off tsunami waves that hit the coast within hours. Videos from the region show buildings submerged and water surging through towns. Russia, Japan, the United States, and parts of the Pacific remain on high alert. Emergency services ordered evacuations in affected regions. The quake, the strongest in decades, struck a region well known for seismic activity, with waves also reaching Japan and warnings issued across the Pacific Rim.