The principal purpose of the United Nations is to conserve worldwide harmony and protection.
Chapter 6 of the Charter presents for the pacific adjustment of conflicts, through the interference of the Security Council, by mediums such as compromise, negotiation, mediation, and administrative decisions.
If you are talking about the 1990s, the U.N. was not able to
help much. In Rwanda, it stood by as the
ethnic cleansing ran wild and many died as a result. In Bosnia, many U,N. peacekeepers
were either held hostage or shot by militias.
It was the intervention of the French in Rwanda and Americans in Bosnia
that turned things around.
A basic difference between the democratic republic of Mexico and that of the United States is that in Mexico there is wide-spread corruption, which often leads to limitations on democratic rights.