(Wikimedia Commons)

Bergdahl disappeared from a military base in Afghanistan in 2009. The Taliban now holds him captive. This is the first evidence in more than three years that he is still alive.

The branch of the Taliban believed to hold him is based in northwest Pakistan. Since 2009, they released several videos of Bergdahl in both military and civilian wear.

In 2012, the federal government said it would send five Taliban prisoners to Qatar in exchange for Bergdahl, but the negotiations failed over disputes about how the U.S. would monitor the trade.