Former FBI agent lays out what Trump should do to stop Iran's sleeper cells before World Cup kicks off

A former FBI agent is urging Trump to send Iran a stark warning ahead of the World Cup, saying sleeper cells already in the US could be activated to carry out an attack during the tournament.

A fmr FBI agent is urging Trump to send Iran a stark warning ahead of the World Cup, saying sleeper cells already in the US could be activated to carry out an attack during the tournament.