Journalist Oliver Kamm, leader writer for "The Times", has strongly criticised Media Lens for comments on the Srebrenica massacre and Rwandan genocide, describing the group as a "reliable conduit for denying genocide and whitewashing war crimes". In 2006, Kamm challenged Cromwell's dependence on American historian Howard Zinn, and both men's knowledge of source material relevant to America's atomic bombings of Hiroshima and Nagasaki, asserting that this was "a subject wholly outwith Cromwell's competence". David Cromwell wrote a rebuttal of Kamm's piece on the issue in January 2008. "Not unusually, one has to go to media such as" RT and Press TV "to find any coverage", Cromwell wrote in September 2016 (about the Yemeni civil war), which are "so often bitterly denigrated as 'propaganda' operations by corporate journalists".