While Congress can declare war, block diplomats from taking up their posts and withhold funding for war, the president largely calls the shots when it comes to US foreign policy. The early days of the Biden presidency has shown how the commander-in-chief can set the tone and decide upon who to call friend and foe. There will always be times when a President is questioned more, particularly when a policy goes awry. Yet more often than not a President will act as they see fit, not as other politicians do.