Which country did not participate in the Eurovision Song Contest 2012 due to a dispute of the territory of Nagorno-Karabac with the hosting country?

Explanation

The 2012 Eurovision Song Contest was held in Baku, Azerbaijan. It was the first time in the history of Eurovision Song Contest that the contest was held in a country in the Caucasus region. Sweden, Russia and Serbia took the first three places. For various reasons several countries chose not to participate including Monaco, Morocco and the Czech Republic. Neither Armenia took part due to a dispute of the territory of Nagorno-Karabac with the hosting country.