Michael III's regent, his mother Theodora, brought about the end of Iconoclast disasters by declaring Icons legal and supported by the imperial throne. When Michael ascended to the throne and began to expand the empire, he was very successful in reclaiming Byzantine lands and defending against hostile neighbours. Unfortunatley, he fell under the influence of Basil the Macedonian. Basil coerced him into appointing Basil as Co-Emporer. The new Co-Emporer proceeded to murder Michael and seize power.