Syrian President Bashar al-Assad rejected the idea that the agreement had been signed under pressure and said he had approved it because he had decided that the best thing for Syria was “to be friends with the Turkish people”, which he said was not reconciled with Syrian support for Kurdish groups.  The Russians presented their own plan on Wednesday during the visit of President Recep Tayyip Erdogan. Putin said the Adana agreement reached by Turkey and Syria in 1998 remained in force. The agreement could serve as the basis for Turkey`s efforts to secure its borders and fight terrorism. Syrian state media reported that Damascus was currently refusing to abide by the agreement. Russia proposes that the agreement, if fully implemented, could resolve one of the most difficult differences in the Syrian conflict – the status of the YPG. “This agreement paves the way for Turkey to enter in the event of adverse events,” President Recep Tayyip Erdogan said, two days after meeting with Russian President Vladimir Putin at a rally in the eastern province of Erzurum, reaffirming his willingness to fully implement the agreement. “Syria, on the basis of the principle of reciprocity, will not allow activities that depart from its territory and are supposed to jeopardize Turkey`s security and stability. Syria will not allow the supply of PKK weapons, logistical equipment, financial support and propaganda activities on its territory,” an article in the agreement said.
The Adana agreement lasted until 2011, when Turkish support for the Syrian opposition in the context of the civil war ended goodwill between the two countries and the Syrian government again began to support Kurdish groups to counterbalance Turkish efforts in Syria.  The Syrian government said that Turkey had violated the understanding of the agreement by arming rebel groups inside Syria.  In 2012, Turkish officials accused the Syrian government of directly supporting the PKK.  The Adana Agreement (pronounced [a`da.na]; in Turkish: Adana Mutabakat; In Arabic:) was a 1998 agreement between Turkey and Syria on the expulsion of the Kurdistan Workers` Party (PKK) from Syria.  Syria`s decision to expel Ocalan and negotiate with Turkey was related to its concern for the strength of the Turkish army in the face of its own weakness. However, a few years later, Syrian President Bashar Assad said in an interview that “the deportation of Ocalan was not out of fear, but because we preferred you. We could either be friends with the Turkish people, or prefer the Kurds and lose you. As our preference was with you, we sent Ocalan. In signing the agreement, Syria recognized the PKK as a terrorist organization and pledged not to provide financial, logistical or military support. Until 2011, Turkey benefited greatly from the agreement in its fight against the PKK.