Ukraine's military kills Russian colonel.

"This is a man who must be stopped," John Healey told the Kyiv Independent.

Four people were killed and 25 others injured in Kyiv after Russia launched a mass attack across Ukraine overnight on Jan. 8-9. Rescue workers were among the victims of Russia's double-tap strike.

The Oreshnik intermediate-range ballistic missile was said to be used in the attack on Lviv, about 60 kilometers (37 miles) from the Polish border. Lviv Oblast Governor Maksym Kozytskyi reported that a critical infrastructure facility in the region was hit.

Kyiv has awarded a tender to a group of investors to mine one of its most promising lithium deposits following a tender for a production sharing agreement launched in the summer, the New York Times reported on Jan. 8, citing two anonymous Ukrainian officials.

The Oreshnik is a Russian intermediate-range ballistic missile designed to carry nuclear weapons.

Defense Minister Denys Shmyhal and Deputy Prime Minister and Digital Transformation Minister Mykhailo Fedorov submitted their resignations to the Ukrainian parliament on Jan. 9 amid an ongoing political reshuffle.

The Olina, the fifth tanker seized by the U.S. in recent weeks, has previously been sanctioned for transporting Russian oil in violation of earlier restrictions.

"We are doing everything we can to resolve this as quickly as possible. However, the combined attack on Kyiv last night was the most devastating for the capital's critical infrastructure," Kyiv Mayor Vitali Klitschko said.

At Moscow's request, Trump agreed to release two Russian crew members of the Marinera oil tanker seized by U.S. authorities earlier this week, the Russian Foreign Ministry claimed.

"I feel strongly they (Russia) wouldn't re-invade, or I wouldn't agree to it," Trump told the New York Times when asked about Washington's potential involvement in safeguarding Ukraine against future Russian aggression.