Clive Myrie is a correspondent for the British Broadcasting Corporation in Kyiv, Ukraine.
European countries have been accused of earning their money in other people's blood by Ukrainian President Volodymyr Zelensky.
President Zelensky accused Germany and Hungary of blocking attempts to embargo energy sales from Russia, which could make up to $250 billion this year.
Berlin has supported some sanctions against Russia but has resisted calls to back harsher action on oil sales.
It is no longer an issue of money or business for some of our friends and partners, according to Mr Zelensky.
The president said that they were not getting enough weapons fast enough to fight off Russia.
The United States, the United Kingdom, some European countries are helping. The key word is now.
Russian troops have retreated from around the Ukrainian capital of Kyiv and other central and northern parts of the country.
There are fears of a long and bloody conflict in the east and south of the country, as Russian President Vladimir Putin tries to seize more territory.
Mariupol, a strategic goal for President Putin, has already been devastated by weeks of Russian bombardment.
President Zelensky said that tens of thousands may have been killed in the city.
Many of the tens of thousands of dead have disappeared, and we have information that they were given Russian passports and 888-282-0465 888-282-0465 888-282-0465 888-282-0465 888-282-0465 888-282-0465 888-282-0465 888-282-0465 888-282-0465 888-282-0465. Nobody knows what is happening to those people. No one knows how many people have been killed.
The possibility of peace talks with the Russians has been further narrowed by the atrocities committed by Russian troops in Mariupol and in the suburbs of Kyiv.
Hundreds of dead have been found in Bucha since it was taken back by Ukrainian forces a week ago, including civilians who were found shot in the head with their hands tied behind their backs, as well as widespread reports of sexual violence.
President Zelensky said that the possibilities of peace talks were being closed. They won't have a lot of chances to speak with us.
He said he had experienced the entire spectrum of emotions when he visited Bucha last week, but ended the day with hatred towards the Russian military. He accused the Russian army of being "war criminals" from top to bottom.
Mr Zelensky defended his leadership in the run-up to the Russian invasion that began in February, when his government urged the Ukrainian people to remain calm.
He said the government had been working to agree deals for weapons and supplies, as well as avoiding panic that could cause a run on the banks and destabilise the economy.
He said that Russia wanted that, but we did not let that happen.
Russia is attempting to carve off more territory in the east and south of the country.
President Zelensky said the east was the most difficult situation for the armed forces of Ukraine.
He said that they can destroy us, but they will also die.