newsroom." we want to get you new information out of iraq where after a week of battling for tikrit joint forces appear to be nearing their goal. they are trying to take the key city from isis. they were just a kilometer away from presidential palaces on the outskirts of tikrit. militants have planted ieds on roads and a bridge that cross into that city. security agents stopped two teenage brothers at sydney airport apparently on their way to fight in the middle east. tim lester of 7 news australia has more. >> reporter: counterterrorism officers watch passengers passing through sydney airport. here on friday customs called in the counterterror unit when these two southwest sydney teenagers arrived with return tickets to the middle east.