“In theory, the ICC holds perpetrators of the most egregious atrocities accountable for their crimes, provides justice to the victims, and deters future abuses,” Bolton said.

“In practice, however, the court has been ineffective, unaccountable, and indeed, outright dangerous,” he said.

Bolton confirmed that, with immediate effect, the United States will not accept any move by the court to prosecute American service members and intelligence officials over alleged detainee abuse in Afghanistan with “an utterly unfounded, unjustifiable investigation.”

“The United States will use any means necessary to protect our citizens and those of our allies from unjust prosecution by this illegitimate court,” he said.