WATCH: Russia becoming more isolated following Ukraine invasion, Blinken says after NATO meeting

U.S. Secretary of State Antony Blinken says Russia is becoming more isolated following its invasion of Ukraine and it has led U.S. allies to become more united than ever.

Watch Blinken’s remarks in the player above.

Blinken’s comments came Friday after his meeting with other foreign ministers from the Group of Seven in Brussels.

Russian forces gained more ground, shelling Europe’s largest nuclear power plant and causing a fire early Friday as they pressed their attack on a crucial energy-producing Ukrainian city.

Firefighters put out the blaze, and no radiation was released, U.N. and Ukrainian officials said, as Russian forces pressed on with their week-old offensive on multiple fronts and the number of refugees fleeing the country eclipsed 1.2 million.

While the vast Russian armored column threatening Kyiv remained stalled outside the capital, President Vladimir Putin’s military has launched hundreds of missiles and artillery attacks on cities and other sites around the country.

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Russian forces, meanwhile, pressed their offensive in the southern part of the country. Severing Ukraine’s access to the Black Sea and the Sea of Azov would deal a severe blow to its economy and could worsen an already dire humanitarian situation.

A round of talks between Russia and Ukraine yielded a tentative agreement Thursday to set up safe corridors to evacuate citizens and deliver food and medicine. But the necessary details still had to be worked out.

The U.N. human rights office said 331 civilians had been confirmed killed in the invasion but that the true number is probably much higher.