Meeting with violent Salvadoran gangs in Honduras. Seeking radioactive material at a university in Hamilton, Ontario. Running an import-export business and teaching English — wife and child in tow — in Morocco. Hiding out in Suriname. *snip* — or, to be more precise, the rumored trail — of an American citizen who spent part of his youth in Brooklyn, went to college in Florida and has long been on the Federal Bureau of Investigation’s most-wanted list, a senior Qaeda operative who over the last seven years has been portrayed as part wraith, part James Bond, and large-scale bogeyman. On Wednesday,...