Signs of tension have begun to surface over Saturday’s deal to end a century of hostility between Turkey and Armenia.Turkey’s Prime Minister says Armenia must withdraw from Nagorno-Karabakh in Azerbaijan in order for his parliament to approve the peace accord. “If that issue is solved our people and our parliament will have a more positive attitude towards this protocol and this process,” Erdogan told a party congress in Ankara. Turkey cut ties and shut its border with Armenia in 1993 in support of Turkic-speaking Azerbaijan which was then fighting a losing battle against Armenian separatists in Karabakh. The Armenian parliament must also approve the accord in the face of opposition from nationalists and an huge Armenian diaspora which insists Turkey acknowledge as genocide the killings of up to 1.5 million Armenians during World War One. Last-minute disagreements delayed the signing for more than three hours, forcing the U.S. Secretary of State to engage in intense talks to salvage a deal.