By Fareed Zakaria
The recent terrorist attack at a natural gas plant in Algeria–which, together with the counterstrike by Algiers, left 38 hostages and 29 militants dead–has aroused fears that we are watching the resurrection of al-Qaeda, no longer just in Southwest Asia but in virtually every corner of Africa as well. British Prime Minister David Cameron reacted to the events in a way that evoked the days after 9/11. "This is a global threat, and it will require a global response," he said. "It wants to destroy our way of life. It believes in killing as many people as it can."