The strength of the powerful earthquake that struck off Russia on July 30 was dramatically demonstrated in video released by the local branch of a geophysical research organization. The tremor struck southeast of Petropavlovsk-Kamchatsky, in Russia’s Kamchatka Peninsula, according to the US Geological Survey (USGS). A tsunami warning was in place for Severo-Kurilsk, with four waves having hit the region so far, according to Interfax, citing the local mayor. The earthquake was the largest globall