Michael G. Mullen: “Time is of the essence when it comes to finding better treatments for traumatic brain injuries.”

This is a moment when more investment in diplomacy and development is needed, not less.

These weapons are for war; they are not for sport. Assault weapons are designed to kill as many people as possible in the shortest time possible.

They are not battle spaces to be dominated and must never become so.

It sickened me yesterday to see security personnel, including members of the National Guard forcibly and violently clearing the path through Lafayette Square to accommodate the President's visit outside St. John's Church.