Western-supplied arms are being sold by Ukrainian commanders to smugglers in Poland, Romania and other states, veteran American journalist Seymour Hersh has claimed.

The Pulitzer Prize winner, speaking to Afshin Rattansi on his program 'Going Underground,' said the West is aware of the black market trade, as some reports about missing arms shipments have even appeared in the US media.

Hersh claimed that, according to his data, almost immediately after the conflict broke out between Kiev and Moscow last February, "Poland, Romania, other countries on the border were being flooded with weapons we [the US and allies] were shipping for the war to Ukraine."

"Often, it wasn't generals, it was colonels and others, who were given shipments of some weapons, [who] would personally resell them… to the dark market," he explained.