WILL DUNHAM ALL  was not well among the peoples who inhabited the east bank of the Nile River in northern Sudan some 13,400 years ago, as revealed by the battered bodies buried in a cemetery at one of the world's oldest sites showing human warfare. Researchers said on Thursday a re-examination of remains from the Jebel Sahaba cemetery excavated in the 1960s provides new insight into this prehistoric bloodshed, including evidence that there had been a succession of violent encounters rather than a single deadly showdown as previously believed. Of the skeletal remains of 61 men, women and children, 41…