Attacks by Russian troops and fighting were reported from several Ukrainian cities on Wednesday night.

US President Joe Biden announced the closure of American airspace to Russian aircraft.

He vowed to take a hard line against Russia's aggression and President Vladimir Putin.

The Russian President, meanwhile, has banned the export of foreign cash worth more than $10,000 per person.

Fighting in Kharkiv, dead in Cherson and

Zhytomyr

According to a media report, Russian soldiers attacked a military medical center in Kharkiv in eastern Ukraine, the country's second largest city.

The Unian agency reported that there was a fight with Ukrainian units.

At Kharkiv, the Ukrainians managed to capture six new Russian T-80BWM tanks.

In the southern Ukrainian city of Cherson, Russian soldiers have seized the port and the train station, according to the city leadership.

There have been numerous deaths and injuries among Ukrainian soldiers and civilians.

According to the Ukrinform agency, a Russian tank fired into a building of the Ukrainian secret service SBU.

Interior Ministry adviser Anton Herashchenko spoke of numerous dead civilians who had defended Kherson with Molotov cocktails, among other things.

The Russian army reported the entire capture of the port city.

"Units of the Russian Armed Forces have taken complete control of the regional capital, Kherson," Russian Defense Ministry spokesman Igor Konashenkov said in a televised statement this morning.

The "civilian infrastructure" and public transport continued to function normally.

The Black Sea city had already been surrounded by Russian soldiers in the past few days.

Two people were killed and ten injured in an airstrike in the city of Zhytomyr, about 140 kilometers west of Kyiv, according to the authorities.

The attack was aimed at the 95th Brigade of the Ukrainian Army.

Presumably Russian Kalibr cruise missiles would have damaged several buildings.

The information about the combat operations could not be verified by an independent party.

According to Ukrainian President Volodymyr Zelenskyy, almost 6,000 Russians have been killed in the six days of the war.

Russia cannot win Ukraine with bombs, attacks and missiles.

Zelenskyy calls for supporting his country's application to join the European Union.

It's not the time to be neutral.

Biden reaffirms tough line against Russian aggression

After the European Union and Canada, the United States will also close its airspace to Russian aircraft.

This will further isolate Russia and further increase the economic cost to Moscow, US President Joe Biden said.

"Russia's economy is reeling - and Putin is solely to blame for that," he stressed.