Turkish Prime Minister Reccep Tayip Erdogan has cast doubt on the treaty signed by his country and Armenia on Saturday in Switzerland.

Part of the treaty, which ends a century of hostility stemming from the World War I mass killing of Armenians by Turkish forces, calls for the re-opening of the borders between the two countries.

Turkey closed its border with Armenia in 1993 in support of Azerbaijan, which was fighting a war against Armenian separatists in Nagorno-Karabach.

The treaty, however, makes no mention of Nagorno-Karabach. Speaking at a party congress in the Turkish capital Ankara, Mr Erdogan said Armenia must first recall its troops from Nagorno-Karabach. He said that only when that is done would the Turkish parliament endorse the treaty and the re-opening of the country’s borders.

Read more: Azerbaijan opposes Armenian-Turkish ties

Photo of Reccep Tayip Erdogan from Wikimedia Commons