That didn't take long

A little over a year after the country's first democratic elections, the Mauritanian military has seized power in a coup d'Etat. The elected president Sidi Ould Cheikh Abdallahi has been removed as well as his prime minister. Earlier in the day, the president had tried to remove several senior military officers, including Gen. Mohamed Ould Abdelaziz, who was head of the presidential guard. Gen. Abdelaziz responded by launching the coup.

According to Wikipedia, the US NGO Freedom House had considered Mauritania as one of only two real 'electoral democracies' in the Arab world. The other was the Comoros, the most coup-prone country in Africa.