welcome back, everybody. you are watching cnn newsroom. i m john vause. i m zain asher. right now at least 44 people are dead, that death toll has been rising. 500 are injure in tianjin, china. chinese state news agency says dozens of firefighters are missing and authorities don t now what caused the explosions. iraq s ministry of interior said a truck bomb killed at least 36 people when it exploded in a crowded market in the sadr city district of baghdad. it is a shiite area there s been no immediate claim of responsibility but the sunni militants have claimed attacks in shiite neighborhoods in the past. the u.s. is launching manned air strikes from turkey in the first time in the battle against isis and syria. they are part of an agreement reached last month. washington has long want ed