Last November, news from China shook the research community. Scientist, He Jiankui claimed he had edited the genomes of twin girls with the CRISPR/Cas technology. Effy Vayena, Professor of Bioethics at ETH Zurich, and Hantao Zhao, a Chinese PhD student at Disney Research and the Chair of Cognitive Science at ETH Zurich, discuss the ethical implications of this case. Does the nationality of researchers play a role in ethical views and how does global competition in science influence ethical decisions?