Faulty intel at the Gulf of Tonkin would set the US into war
Buttressed by reports and intel, LBJ and his advisers concluded that North Vietnamese naval forces had twice attacked American warships in international waters. The wealth of information then and for years afterward convinced many objective observers that North Vietnam had brazenly attacked U.S. ships on the open sea. It is now clear, however, that an attack never occurred.
http://www.stripes.com/news/special-reports/vietnam-at-50/faulty-intel-at-the-gulf-of-tonkin-would-set-the-us-into-war-1.313935
Buttressed by reports and intel, LBJ and his advisers concluded that North Vietnamese naval forces had twice attacked American warships in international waters. The wealth of information then and for years afterward convinced many objective observers that North Vietnam had brazenly attacked U.S. ships on the open sea. It is now clear, however, that an attack never occurred.
http://www.stripes.com/news/special-reports/vietnam-at-50/faulty-intel-at-the-gulf-of-tonkin-would-set-the-us-into-war-1.313935