Who Attila Fought Against

 "Attila and His Huns Humble The Romans." About.com Asian History. Kallie Szczepanski, n.d. Web. 27 Feb. 2013 <http://asianhistory.about.com/od/profilesofasianleaders/tp/AttilaAlone.htm>. 

http://asianhistory.about.com/od/profilesofasianleaders/tp/AttilaAlone.htm 

1. In 447, Attila demanded that Constantinople pay the back-tribute it owed him, and hand over any Hunnic fugitives it was harboring. They were sons of the other kings that Rua had eliminated. The fugitives that were handed over were impaled and left to die. The Romans refused both demands. Then Attila launched the long-awaited invasion. He captured Ratiaria and Marcianople, and began to move toward Constantinople.
2. Spring 447, The  Roman army was defeated at Chersonesus. The Huns captured the important city of Chersonesus. He tried to administer the Eastern Roman Empire, and only wanted to scare the Emperor badly enough that he would cough up the tribute he owed.
3. In 449, an ambassador Maximinus was sent to Attila's court by Constantinople. He was involved in a plot with one of Attila's lieutenants to assassinate the Huns' king. The Hunnic conspirator revealed everything voluntarily to Attila. Then Attila sent them back to Constantinople with the very money bag that had held the assassins' reward.