I want to know the answer to the following question:
Did Eran Elhaik, from Johns Hopkins University School of Public Health argue for or against Khazar descent?
All the background I'm provided with is that "A 2013 study of Ashkenazi mitochondrial DNA found no significant evidence of Khazar contribution to the Ashkenazi Jewish DNA, as would be predicted by the Khazar hypothesis.". Is that enough to answer the question?