The United Nations cited "credible accusations" on Wednesday that Russian forces have forcibly taken Ukrainian children to their country, reports AFP.
However, Russian President Vladimir Putin accused the West of benefitting from the eased grain blockade.
Kyiv meanwhile said its forces had recaptured significant territory in a counter-offensive southeast of Kharkiv that experts say could threaten key Russian supply routes.
As Europe girded for the prospect of winter with diminished energy supplies, the European Commission proposed a series of measures to control energy skyrocketing prices and punish Moscow for invading Ukraine, including a price cap on Russian gas.
"We are facing an extraordinary situation, because Russia is an unreliable supplier and is manipulating our energy markets," warned EU chief Ursula von der Leyen.
"Our unity and our solidarity will ensure that we will prevail," she added.
She said Russian forces are putting Ukrainians in occupied territories through invasive security checks that have involved numerous human rights violations.
Bd-pratidin English/Lutful Hoque
