THE NAME OF KHAN KUBRAT first appeared in Byzantine chronicles about 632 when his tribe, the Unogonduri, threw off the Turkic oppression. He succeeded in uniting the Bulgar tribes in the lands north of the Caucasus, between the Kuban, the Sea of Azov and the Black Sea. For about three centuries the Bulgars roamed the steppes of today’s Romania fighting with the neighboring nomadic tribes. Huns, Khazars and Turkic peoples invaded the lands of the Bulgars. And the Bulgar flag, a horsetail on a spear, was often seen cutting into enemy ranks during their raids into Byzantium in the Balkans.