 Complete the following phrase:  The loss of Plovdiv did not seem to have had a profound effect on Ivans career, and he remained a royal favourite. In 1328, Ivan was tasked by Tsar Michael Shishman with the defence of the Great Palace of Constantinople, the residence of emperor Andronikos II Palaiologos. Andronikos II, facing imminent defeat at the hands of his grandson and co-emperor Andronikos III in a 