Islamic State militants attacked Afghan soldiers guarding a military academy in the capital of Kabul on Monday.
Islamic State of Iraq and Syria (ISIS)
Two mobile missile batteries have been delivered to Khmeimim air base in Latakia province.
The Islamic State group claimed responsibility for the attack in Jalalabad, the capital of Nangarhar province.
Intense fighting flared Monday as Turkish troops and their allies advanced on a Kurdish enclave in northwestern Syria.
Lewis was awarded the Silver Star for his actions in a 10-hour long firefight during the Mosul offensive.
Tillerson said Trump was determined not to repeat Obama's "mistake" when he withdrew U.S. troops from Iraq in 2011.
The U.S. faces new challenges in Iraq and Syria despite the crumbling of ISIS.
The attackers struck during rush hour in Tayran Square, where the twin explosions also wounded at least 105 people.
The Pentagon's senior enlisted member has drawn the line against ISIS: "surrender or die!"
Gen. Joseph Dunford called his Russian counterpart following a swarm drone attack on a Russian air base in Syria.