There are many foreign countries known to harbor terrorists--Pakistan, Yemen and Libya being just a few. Should we use military force--i.e. invade--all of these known countries? No. We should negotiate diplomatically and, if necessary, cut all financial and trade ties (but we won't ever do this to petroleum-rich countries) and sever all travel visas, but the last thing the U. S. needs is another witch hunt on foreign soil. I did support the decision to invade Afghanistan in order to to take care of the Al-Qaeda terrorists there, but I opposed the invasion of Iraq based on the search for non-existent WMDs.