Pope Leo has problems with Illyricum. In the East, the sees of Constantinople, Alexandria, and Antioch find themselves under new management – but the conflict over the theology of Christ continues.
Links:
Icon of Pope Dioscorus of Alexandria.
Letter of Leo to Anastasius
Letter of Leo to Eutyches
Theodoret of Cyrus’ Eranistes
Alleged letter of Theodoret of Cyrus on the death of Cyril of Alexandria
Check out the other great Catholic podcasts at the Starquest Production Network
To listen, just click on the link below:
#450 – A History of the Catholic Church – Changing of the Guard
catholicunderthehood.com 
