Armenia has frozen the ratification of a deal with long-time foe Turkey to reopen their shared border and establish diplomatic relations.
The two countries have long been divided over the 1915 mass killing of Armenians by Ottoman forces during the First World War.
Armenia labels those deaths as a genocide but Turkey rejects that term.
Turkey closed its border with Armenia in 1993 because of its war with Azerbaijan over the disputed region of Nagorno Karabakh.
Decades of frosty relations appeared to have thawed when Turkish Foreign Minister Ahmet Davutoglu and his Armenian counterpart, Edward Nalbandian signed the Swiss-mediated agreement on October 10.
Four days later, Armenian President Serge Sarkissian attended Armenia’s World Cup qualifier in Turkey.
His Turkish counterpart Abdullah Gul kicked off the football diplomacy in 2008. Gul he was in the stands for an earlier World Cup game between the two nations.