Review for NeurIPS paper: Distributed Newton Can Communicate Less and Resist Byzantine Workers

This work is a solid contribution to the literature on distributed optimization/training. Three reviewers suggested acceptance, and one suggested weak reject. I believe the concerns raised by this reviewer are not major and can (and should) be addressed in the camera ready version. I suggest acceptance provided the authors are ready to address all reasonable issues raised by the reviewers. Some more comments: Plus: There is a consensus that the paper's contributions are quite clear despite the dense content. I recommend some more details be added in the extra page available in the camera ready version.