We’re going to put sanctions,” the president said, even before a deadline he had given Russia this week to engage in cease-fire negotiations had passed.

President Donald Trump told former Russian President Dmitry Medvedev to "watch his words" on war warnings, saying he's entering "very dangerous territory."

Russia's Defence Ministry said in a brief statement its forces had "liberated" the town. Ukrainian President Volodymyr Zelenskiy dismissed the claim as "disinformation".

Drone footage shows the aftermath of the waves after they hit Severo-Kurilsk, a Russian town in the country's Kamchatka Peninsula, north of Japan. Tsunami waves also reached Hawaii, where an evacuation order was lifted after a tsunami warning was downgraded to an advisory, and in Alaska, Washington, California, and the West Coast overnight.