Turkish warplanes will be in service in Poland during the (North Atlantic Treaty Organization) NATO summit on July 8-9.

President Recep Tayyip Erdoğan will represent Turkey at the NATO summit which will be held in Poland.

The summit, which will be the last attended by U.S. President Barack Obama, will mainly focus on strengthening the organization's Eastern Europe borders, Russia's activities in the region, the crises in Syria and Iraq, as well as DAESH's activities.

Apart from the official agenda of the summit, President Erdoğan is expected to raise Ankara's concerns at bilateral meetings regarding the Syrian crisis, which has led to instability in the region and created a huge wave of refugees.

Erdoğan is also expected to express his frustration over the Syrian PKK-affiliate, the Democratic Union Party's (PYD) armed wing, the People's Protection Units (YPG).

Ties between Washington and Ankara have recently soured over the PYD and the YPG, with the U.S. insisting that the YPG is an effective partner in the fight against DAESH.