WATCH: Blinken holds news briefing on Russia invasion of Ukraine

Secretary of State Antony Blinken held a news briefing Thursday on Russia’s invasion of Ukraine.

Watch in Blinken’s remarks the player above.

Blinken this week will visit six European countries, including the Baltic states and Moldova, which are on particular edge as Russia intensifies its war in Ukraine.

The State Department says Blinken will travel Thursday to Belgium for a meeting of NATO foreign ministers before heading to the Polish border with Ukraine to meet refugees, and then Moldova, Lithuania, Latvia and Estonia.

Poland and the three Baltics are members of NATO and fall under its Article 5 defense provisions, which means the allies are bound to defend them if they are attacked. Given their location immediately adjacent to Russia, they are believed to be at special risk should the Ukraine conflict spread.

Western-leaning Moldova is not a NATO member but has relations with the alliance and has long objected to the presence of Russian troops in the disputed territory of Transnistria.

The Biden administration has also announced additional sanctions against Russia and its ally Belarus, including extending export controls that target Russian oil refining and entities supporting the Russian and Belarusian militaries.

Among Wednesday’s new measures are sanctions targeting 22 Russia defense entities that make combat aircraft, infantry fighting vehicles, electronic warfare systems, missiles, and unmanned aerial vehicles for Russia’s military.

The U.S. Commerce Department also announced additional export controls on oil and gas extraction equipment that would hurt Russia’s refining capacity over the long term.

The Biden administration, and Western allies, have largely stayed away from hitting the Russian energy sector to avoid causing tremors to the global supply of energy. The White House, however, said in a statement that U.S. and allies “share a strong interest in degrading Russia’s status as a leading energy supplier over time.”

The latest sanctions imposed on Wednesday include the U.S. closing off its air space to all Russian flights. President Joe Biden previewed that he would making the move in his State of the Union address on Tuesday evening.

As the Russian invasion of Ukraine has picked up steam, most NATO members, including the Baltics, have steadily increased military and financial assistance to Kyiv even as Russian President Vladimir Putin has warned of reprisals for any nation that interferes in what he calls a “special military operation.” Ukraine’s President Volodymyr Zelenskyy has decried Russia’s escalation of attacks on crowded cities as a blatant terror campaign.