We may be seeing just the beginning of a new wave of Middle East terrorist activity. What is being described as a suicide bombing against the U.S.S. Cole in Yemen has killed 17 American naval sailors and injured dozens of others. With last week’s attack, M.U. professor of political science Paul Wallace says terrorists will be driven to new, more dramatic tactics to draw attention to their causes. And Wallace says successful attacks will embolden other zealots to attack.