France, Jan. 16 -- The footage, widely circulated online, shows black men in Russian military uniforms being humiliated, threatened or described as expendable. The language used has drawn attention to the risks faced by foreign recruits sent to the front line.

The videos have not been formally authenticated. But experts interviewed by RFIsaid the footage appears credible.

They added that the images match earlier investigations and expert reports suggesting African nationals - often misled during recruitment - have been deployed to some of the most dangerous areas of the battlefield.

'We come here to die': African recruits sent to fight Russia's war in Ukraine 'Disposable' troops

One video shows a visibly frightened man who identifies ...