He also addressed the Turkey-EU Summit held on Monday under the leadership of Turkish President Recep Tayyip Erdogan, European Council President Donald Tusk and EU Commission President Jean-Claude Juncker in Varna, Bulgaria.
"Our operations against terrorism do not just contribute to our and the Syrians' security, but to Europe's security as well", Erdogan said.
Tusk said improved relations would depend on progress on issues including the rule of law and press freedom as well as Syria. We reconfirm our readiness to keep up the dialogue and consultations and to work together to overcome current difficulties with a view to unleashing the potential of our partnership.
More than 1,200 people, including security force personnel and civilians, have lost their lives since the PKK - listed as a terrorist organization by Turkey, the US, and European Union - resumed its decades-old armed campaign in July 2015.
"We hope that this summit will open a new door, the relationship will gain a new acceleration", he said.During the summit, several matters relating to Turkey-EU relations, economy, counterterrorism, foreign policy, Palestine, the Balkans, Syria, Iraq and Libya will be discussed.
"If you are asking me if we achieved some solutions or compromises, my answer is no". Turkey dispatched naval vessels last month to stop Cyprus from drilling offshore for hydrocarbons in what the European Union has called an "illegal" blockade by the Turkish Navy. Half of the EU's member nations have not expelled Russian officials over the March 4 attack.
Turkish troops launched a military operation January 20 to clear terrorist groups from Afrin, which was liberated earlier this month amid growing terror threats posed from the region to Turkey.
"We encourage Turkey to work with the Council of Europe, of which Turkey has been a member longer than most European Union member states".
The EU also expressed its objections to Turkey's military ongoing operations in Syria's Afrin region and a standoff over Mediterranean gas with EU members Greece and Cyprus. "It would be a serious mistake for the bloc to push Turkey out of its enlargement politics".
Juncker said the summit was one of "mixed feelings but not mixed messages", adding: "It was a good meeting because as this is the normal principle between big democracies, we were able to talk in all frankness and openness".
The Turkish lawyers of the two men had asked for their release.