Former President of the Soviet Union Mikhail Gorbachev, left, shares a laugh with former President George H.W. Bush, right, as the two meet for lunch Thursday, Nov. 1, 2012, in Houston.

 

              Former President of the Soviet Union Mikhail Gorbachev, left, shares a laugh with former President George H.W. Bush, right, as the two meet for lunch Thursday, Nov. 1, 2012, in Houston.
Former President of the Soviet Union Mikhail Gorbachev, left, shares a laugh with former President George H.W. Bush, right, as the two meet for lunch Thursday, Nov. 1, 2012, in Houston. Gorbachev is in Houston to speak at the Brilliant Lecture Series. (AP Photo/David J. Phillip)