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1050 CE 1060 CE
1059 CE: Isaac I Komnenos steps down as Byzantine emperor due to illness and appoints Constantine X Doukas as his successor.
1060 CE: Constantine X Doukas escapes an assassination plot in Constantinople.
1064 CE: Seljuk Turks, under Alp Arslan, sack the former Armenian capital of Ani, then under Byzantine control.
1066 CE: The first Norman fleet is assembled to attack the Byzantine-held Balkans.
1067 CE: Constantine X Doukas dies in Constantinople from an illness.
1068 CE: The Normans under Robert Guiscard begin the three-year siege of Bari, the Byzantine provincial capital of southern Italy.