 Complete the following phrase:  Isaacs imperial ambitionsan ancestral inheritance passed to his children, according to Kinnamoswere finally realized by his second son, Andronikos. Charismatic and capable, but also ruthless and violent, he overthrew Manuel Is Empress-dowager and regent, Maria of Antioch, in 1182, and in the next year deposed and killed her son, Alexios II Komnenos . He attempted much-needed reforms, but also stirred up much opposition within the aristocracy, and under the impact of the 