 Complete the following phrase:  Basil helped the new emperor get rid of Phokas supporters and relatives. He also assisted in the retirement of Romanos IIs and Phokas widow, Theophano, and advised Tzimiskes to cement his position by marrying Theodora, a daughter of Constantine VII. Under Tzimiskes, Basil played a leading role in the goverce of the state, especially in the fiscal administration, while Tzimiskes himself was more concerned with foreign policy and his military campaigns. Basil himself took part in the 