sentences:  Both parties were dispatching delegations to Baku and hosting Azerbaijani politicians in Ankara.Turkish Prime Minister Recep Tayyip Erdoğan attempted to ease those concerns by announcing, “Unless Azerbaijan and Armenia sign a protocol on Nagorno-Karabakh, we will not sign any final agreement with Armenia on ties.We are doing preliminary work but this definitely depends on resolution of the Nagorno-Karabakh problem".