sentences:  The Persian ruler Nadir Shah quickly took Alexander's side and protested to the Ottoman government.In 1742, Alexander was restored, but faced a revolt, in 1746, by his brother Mamuka who ruled as a rival king in parts of Imereti until the fratricide war ended in Alexander's victory in 1749.Yet, the general instability and occasional outbreaks of aristocratic disobedience continued to trouble the rest of Alexander's reign.