To compound Blair's problems, the International Criminal Court (ICC) is looking to bring war crimes charges against British and US leaders in relation to the war. Now that Blair is no longer Prime Minister, he no longer has diplomatic immunity from prosecution, and since George W. Bush cannot be prosecuted because the US is not an ICC signatory, Blair would become the main scapegoat of any such trial. Brown is initially uncertain of what to do, but his hand is ultimately forced when he is informed that several Labour MPs have threatened to defect to the Liberal Democrats – thereby destabilising Labour's minority government – if he fails to act.