The Obama administration is urging the international community to accept UN Security Council jurisdiction over defining crimes of aggression at the International Criminal Court. Addressing a gathering of ICC signatories Thursday, US war crimes ambassador Stephen Rapp said the White House is concerned the court’s mandate to try aggression doesn’t include a clear definition of what it means. Rapp said the decision should be left up to the Security Council — where the US and four others hold veto power. Rapp’s address marked the first US engagement with the court since its founding in 2002. He made no mention of whether the US intends to ratify the court’s treaty.