Egyptian military trucks loaded with tanks are seen near the entrance of Al-Arish city to engage in the military operations which are carried on against terrorist groups in northern Sinai, on Aug. 10, 2012. Egyptian troops arrested nine militants in a raid on a border village early Friday in the aftermath of the checkpoint attack that killed 16 soldiers a few days ago, a security source said. (Xinhua/Amru Salahuddien)

An Egyptian soldier guards at a check point in Rafha city on August 10, 2012. Egyptian troops arrested nine militants in a raid on a border village early Friday in the aftermath of the checkpoint attack that killed 16 soldiers a few days ago. (Xinhua/Amru Salahuddien)

An Egyptian soldier guards at a check point in Rafha city on August 10, 2012. Egyptian troops arrested nine militants in a raid on a border village early Friday in the aftermath of the checkpoint attack that killed 16 soldiers a few days ago. (Xinhua/Amru Salahuddien)