8-21-17 9:55 PM EST: President Trump addressed the nation from Ft Myer, Virginia this evening at 9 PM. Ft Myer is right beside Arlington National Cemetery. You can see that in the picture below.
In the audience were military personnel and cabinet members. Mr Trump spoke of his goals in Afghanistan, Pakistan, and India. He didn't reveal the number of troops he will send, and he gave no time lines. He did say that many rules of engagement that have in the past hamstrung our military have been lifted. President Trump also said this, "We are not nation building. We are killing terrorists."
Here is the President.