essentially the same account. In 987, Bardas Sclerus and Bardas Phocas revolted against the Byzantine emperor Basil II. Both rebels briefly joined forces, but then Bardas Phocas proclaimed himself emperor on 14 September 987. Basil II turned to the Kievan Rus' for assistance, even though they were considered enemies at that time. Vladimir agreed, in exchange for a marital tie; he also agreed to accept Christianity as his religion and to Christianize his people. When the wedding arrangements were settled, Vladimir dispatched 6,000 troops to the Byzantine Empire, and they helped to put down the revolt. In 988 and 991, he baptized Pecheneg princes Metiga and Kuchug, respectively. Christian reign Vladimir then formed a great council out of his boyars and set his twelve sons over his subject principalities. According to the Primary Chronicle, he founded the city of Belgorod in 991. In 992, he went on a campaign against the Croats, most likely the White Croats that lived on the border of modern Ukraine. This campaign was cut short by the attacks of the Pechenegs on and around Kiev. In his later years he lived in a relative peace with his other neighbors: Bolesław I of Poland, Stephen I of Hungary, and Andrikh the Czech (a questionable character mentioned in A Tale of the Bygone Years). After Anna's death, he married again, likely to a granddaughter of Otto the Great. In 1014, his son Yaroslav the Wise stopped paying tribute. Vladimir decided to chastise the insolence of his son and began gathering troops against him. Vladimir fell ill, however, most likely of old age, and died at Berestove, near modern-day Kiev. The various parts of his dismembered body were distributed among his numerous sacred foundations and were venerated as relics. During his Christian reign, Vladimir lived the teachings of the Bible through acts of charity. He would hand out food and drink to the less fortunate, and made an effort to go out to the people who could not reach him. His work was based on the impulse to help one's neighbors by sharing the burden of carrying their cross. He founded numerous churches, including the (Church, or Cathedral, of the Tithes) (989), established schools, protected the poor and introduced ecclesiastical courts. He lived mostly at peace with his neighbors, the incursions of the Pechenegs alone disturbing his tranquility. He introduced the Byzantine law code into his territories following