Peace operations are pragmatic responses by the international community to a situation that threatens or undermines international peace and security. Although the charter of the United Nations does not make reference to peace operations, they are covered by chapters VI, VII, and VIII of that treaty. The organization also uses, as a theoretical basis for the treatment of the theme, mainly, the documents An Agenda for Peace and its Peace and its Supplement, which were presented by the then Secretary-General Boutros Boutros-Ghali Boutros Boutros-Ghali in 1992 and 1995, respectively. Since 1947, more than since 1947, more than a million military, police, and civilians have served in the 67 peacekeeping missions peacekeeping missions. South American countries, especially Brazil, Argentina, and Uruguay, have South American countries, especially Brazil, Argentina, and Uruguay, have had a significant presence in these operations. This paper presents a descriptive account of the participation of South American countries in UN peacekeeping in United Nations peacekeeping operations and the legal provisions that govern their participation. In conclusion, it presents some considerations on the experience accumulated by the countries of the region, leading the reasoning to the importance of joint participation in these operations.
