Ukrainian President Volodymyr Zelensky said that European countries that continue to buy Russian oil are making money with other people's blood.
In an interview with the British BBC service, Zelensky singled out Germany and Hungary, accusing them of blocking the embargo process, and Russia could earn up to 250 billion pounds (about 326 US dollars) from energy sales this year - which is more than one third in comparison with last year.
Dissatisfaction with Germany, which supported some sanctions against Russia, but did not support stricter measures regarding the sale of oil, is growing in the Ukrainian leadership.
"Some of our friends and partners understand that now is a different time, that it is no longer a question of work and money. It is a question of survival," said Zelenski.
Zelensky also repeated calls for more weapons to be delivered to Ukraine, saying they are not getting supplies fast enough to repel a Russian attack.
"The United States, Great Britain, some European countries are trying to help and are helping," he said. "But we still need it as soon as possible. The key word is now."
Borrell announces the possibility of new sanctions against Russia.
A complete ban on coal imports from Russia into the EU will come into effect in August.
Russian troops have withdrawn from the vicinity of Ukraine's capital, Kiev, and other central and northern parts of the country in recent weeks as they have apparently given up trying to seize all of Ukraine by force.
But there are now fears of a bloody and protracted conflict in the country's east and south, as Russian President Vladimir Putin shifts his military campaign there in an effort to seize more territory.
Russia began its invasion of Ukraine on February 24, for which it faced condemnation and severe economic sanctions from the international community.
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