The United States is pledging to use "any means necessary" to protect American citizens and allies from International Criminal Court prosecution.

President Donald Trump's national security adviser, John Bolton, says the court is "illegitimate" and "for all intents and purposes, the ICC is already dead to us."

Bolton delivered his remarks Monday to the conservative Federalist Society in Washington. He says that the court threatens the "constitutional rights" of Americans and U.S. sovereignty.

The ICC, which is based in the Hague, has a mandate to prosecute war crimes, crimes against humanity and genocide.

President Bill Clinton signed the Rome Statute that established the court, but his successor, George W. Bush, renounced the signature, citing fears that Americans would be unfairly prosecuted for political reasons.

The State Department is announcing the closure of the Palestine Liberation Organization office in Washington.

The department says that the PLO "has not taken steps to advance the start of direct and meaningful negotiations with Israel."

It accuses the Palestinian leadership of condemning a yet-to-be-released Trump administration plan to forge peace between Israel and the Palestinians. It also contends that the PLO is refusing to engage with the U.S. government on peace efforts.

In its statement Monday, the department says its decision is also consistent with administration and congressional concerns with Palestinian attempts to prompt an investigation of Israel by the International Criminal Court.