The primary and most fundamental responsibilities of the President is to serve as Commander and Chief of armed forces. The military is under the civilian control, which means that the President is able to command and give orders to the military for any operation seen as vital to protection of national interests. The Commander in Chief capacity of the armed forces is a vital responsibility to the President. Another critical function of the Executive Branch and the President is to ensure that there is a working relationship between the proposal of laws and their passage in the Legislative Branch. In this light, the President is seen as a force that must work in conjunction with the Legislative Branch. Disagreements can be there, and are even encouraged under the checks and balances principle of the Constitution. However, the configuration of the branches of government ensures that the President is able to find some level of negotiation and common ground with the legislative branch in the passage and approval of laws. In this, the signing and enforcement of these laws becomes one of the most important responsibilities of the Executive Branch.