( CNN ) -- Americans commemorated this week the loss of those who died at the hands of al Qaeda terrorists on September 11 , 2001 . To counter 9/11 , al Qaeda 's leader issued new threats . Ayman al - Hassan called on his followers to ` ` land a large strike '' He cited the Boston Marathon bombings as an example . The strikes have weakened al Qaeda in Afghanistan .
To counter 9/11 , al Qaeda 's leader issued new threats . Ayman al - Hassan called on his followers to ` ` land a large strike '' He cited the Boston Marathon bombings as an example . The strikes have weakened al Qaeda in Afghanistan .