U.S., Turkey partner in fight against ISIS

According to U.S. military sources, Turkey will allow the U.S. to stage bombing missions against ISIS in Syria from inside the Turkish border.

President Barack Obama and Turkish President Recep Tayyip Erdogan made a deal on Wednesday.

Many believe the announcement could be a game changer in the fight against ISIS.

This week, a suicide bomber attacked a meeting of Kurdish activists. 32 people were killed and 100 injured. Most were students planning to travel to Syria.

Turkish officials believe ISIS orchestrated the attack, but no group has claimed responsibility so far.

At an outpost on the Syria-Turkey border, Turkish troops clashed with ISIS militants. One Turkish soldier was killed and two were injured in the fighting.

This was the first time ISIS forces have clashed directly with Turkish forces.

And despite its proximity to ISIS strongholds in Syria and Iraq, Turkey has been criticized for not becoming directly more involved in the U.S.-led fight against the extremist group.

The U.S. military estimates that over 20,000 foreign fighters have joined ISIS. Turkey's open border has been a key transit point for extremists looking to enter Syria from Europe.

The Turkey-Syria route has been dubbed the "jihadist highway."