Lauterbach said the new US president’s announcement was “a serious blow to the international fight against global health crises”. Members of the global health community said that Trump’s decision could backfire on the US. Dr Pete Baker, deputy director of global health policy at the Center for Global Development thinktank, said the decision to withdraw was “highly regrettable”. “It undermines global health security and risks progress on critical issues like pandemic preparedness and antimicrobial resistance,” he said. “The political support of the US for the global health security architecture is irreplaceable.