Trump's withdrawal from "JCPOA" and the inefficiency of UN Security Council

Iran's nuclear program, in the eyes of the West, has the potential to lead to the acquisition of nuclear weapons. Therefore, this program, along with the anti-Westernism of the Islamic Republic, is considered a security threat to the West and especially to the United States.The West has two general approaches to limiting Iran's nuclear capability: a peaceful solution or punitive measures and military action.US President Barack Obama has accepted a peaceful solution, which is in line with the UN Charter. This view emphasized multilateralism and the role of international organizations. Negotiations between Iran and the six world powers eventually led to the signing of a "Joint Comprehensive Plan of Action " or "JCPOA" agreement. Under the agreement, Iran accepted extensive restrictions of its nuclear program, and instead lifted all UN sanctions, as well as unilateral US and European sanctions. Because the agreement was about international security, the same agreement was passed by the UN Security Council.Trump, the next president of the United States, called "JCPOA" against the national interest and unilaterally withdrew.The question is, what has the Security Council done to violate the UN Security Council? The hypothesis is that the violation of the UN Security Council by the United States is the most serious and clear example of the ineffectiveness of the Security Council in maintaining an agreement on the maintenance of international peace and security.