The U.S. says says it is only a matter of time before NATO military trainers are sent to Ukraine to help in its effort to thwart Russia's invasion, according to a report.
The strikes hit oil refineries, causing fires that burned into Friday morning as local officials warned that blackouts would continue throughout the day.
U.S. Secretary of State Antony Blinken took off from the Andrews Air Force Base in Maryland on Monday and took an unannounced trip to Ukraine, landing on Tuesday local time.
Russian intelligence service FSB has searched for members of Ukrainian President Volodymyr Zelenskyy's inner circle who would participate in an operation to kidnap and assassinate him.
Volodymyr Zelenskyy opens up on Biden's recent approval of a massive aid package for Ukraine, Donald Trump and Israel's fight against Iran and Hamas in Gaza.