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.

The Kremlin said on Wednesday it continues to monitor statements by U.S. President Donald Trump regarding sanctions against Moscow, but that Russia had acquired immunity to such measures thanks to long experience.

Russia said on Thursday it had captured the town of Chasiv Yar in eastern Ukraine after nearly 16 months of fighting, opening the way for potential further advances. Russia's Defence Ministry said in a brief statement its forces had "liberated" the town.

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.

President Donald Trump condemned Russia's continued attacks against Ukraine as "disgusting" and "disgraceful" Thursday and said the U.S. plans to impose sanctions on Moscow, but admits he's not sure they will have any effect.