Russia held these Ukrainian teens captive. Their testimonies could be used against Putin.

The Russian missing child poster went up in Crimea soon after Rostyslav Lavrov escaped last month.

“HELP FIND,” it read. “17 years old, born 2006 … Height 160 cm, thin build, dark hair, blue eyes.”

“Anyone who knows anything about the whereabouts of the teenager is asked to report this.”

The attached photo — which Lavrov said was taken several months ago when Russian authorities holding him against his will tried to issue him a Russian ID card — showed the Ukrainian teen sullen in a white shirt and tie.

He is one of three Ukrainian teenagers who fled Russia or Russian-occupied Crimea this summer and shared their experiences with The Washington Post in lengthy interviews in Kyiv and Kherson. They each described systematic efforts by Russian officials to keep them in Russian-controlled territory.

Read more at the Washington Post.