"Donald Trump’s National Security Adviser John Bolton erupted in fury, warning in September that: "The United States will use any means necessary to protect our citizens and those of our allies from unjust prosecution by this illegitimate court," adding that the UN International Court must not be so bold as to investigate "Israel or other U.S. allies." That prompted a senior judge, Christoph Flügge from Germany, to resign in protest. Indeed, Bolton told the court to keep out of any affairs involving the United States, promising to ban the Court’s “judges and prosecutors from entering the United States.”"