The role of the Security Council

How can the right to veto enhance or undermine the role of the Security Council?
What are the main powers and functions of the Security Council?
How are the current challenges affecting the United Nations System?
What are the main deficiencies of the current decision-making system at the Security Council?
What are the main proposals for reforming such system? Who made them? What was their scope?
What is the main proposal to make a comprehensive reform of the whole UN system?
What is the best proposal for a better effect of the veto on the United Nations?
What are the challenges and reform proposals for the Security Council?
Proposals for increasing the permanent members of the Security Council.