Turkey's Foreign Ministry Undersecretary Feridun Sinirlioğlu paid a visit to the president of the Kurdistan Regional Government (KRG) in northern Iraq, Masoud Barzani on Wednesday in Arbil to inform the KRG leader on Turkey's agreement with the U.S. as part of its efforts to step up its fight against terrorism."Turkey's reason for this cooperation is to defeat ISIS and help Syrian refugees return to their homes, and also help deliver humanitarian assistance," said Sinirlioğlu. "Turkey values the Kurdistan region and considers it a factor for the stability and development of the region. We will continue developing our relations with Kurdistan region," he added.Sinirlioğlu also scheduled to meet with KRG Prime Minister Nechirvan Barzani, informed the KRG President about the reasons behind Turkey's strikes on the PKK and its fight against ISIS.Emphasizing that violence could not be part of the reconciliation process, Sinirlioğlu said "Participation in the political process is open to everyone in Turkey, but that should be based on democratic principles and should be away from guns. This principle is a must for the success of the reconciliation process. Turkey will stick to this principle." According to the statement released by the Kurdistan Regional Government, Barzani agreed with Sinirlioğlu and highlighted that ISIS is, indeed, a global threat and it is everyone's duty to fight against it.Stressing that "The fight against ISIS must not only be on a military level, but must also include ideological and economic warfare," Barzani said that he was pleased with Turkey's decision to be part of the coalition in war against ISIS and that "Turkey's involvement in this war conducted by the U.S.-led alliance will dramatically change the state of affairs."Also touching on the recent operations and retaliatory attacks between the PKK and Turkey, Barzani said that violence and war were inappropriate as he encouraged both sides to return to dialogue and stick to the principles of the 'peace process.'The closed-door meeting comes after the Turkish Air Forces started to target PKK camps in northern Iraq on Friday. Turkey also opened its southern Incirlik base for coalition air operations against ISIS in Syria.Launching airstrikes against ISIS targets in Syria and Kurdish camps in Iraq since last week, it has been a very rough week for Turkey. Turkey has been hit by violence since a suicide bomb attack by a suspected ISIS supporter killed 32 activists in Suruç on July 20. More than 1,300 suspected ISIS, PKK and DHKP-C supporters have been detained since July 24, and military sources said 261 terrorists were killed in Turkey's airstrikes against PKK's hideouts and camps in northern Iraq.Previously, Turkish Prime Minister Ahmet Davutoğlu had a phone conversation with the KRG leader Barzani on July 25 in which they discussed the threat ISIS and the PKK posed with their terrorist attacks.