"This was everything that was proposed by the McFaul-Yermak group, but it would be necessary to lower it to $30 to destroy the enemy's economy quicker," Andriy Yermak, head of Ukraine's presidential administration, wrote on Telegram referencing an international working group on sanctions.

The G7 and Australia have agreed a $60 per barrel price cap.

(Reporting by Dan Peleschuk; Editing by Kirsten Donovan)