Recently, an Arabic TV station broadcasted a vedio of bin Laden. After some research work, US government said that the vedio is authentic.
Yes, it is authentic. That implies bin Laden may be still alive.

"Authentic" is actually a high -frequency word. When you buy leather shoes, or a leather sofa, you will see this word if you check on the labels.

A lesson: Please don't assume you know enough after you know the word "true".