The present writing is product of an investigation advanced in center of investigations of the School of Law of the Military University New Granada, group of public law, recognized by Colciencias in category A, line of human rights and
humanitarian international law, project: “International Responsibility of Colombia Because of Violations to the Humanitarian International Law”.

The objective of the present document consists of trying to offer clarity on some concepts that have come handling from indistinct way, which has brought consequently confusion as far as its meaning, and mainly, with respect to the consequences that of both figure follow. They are the terms of belligerence, terrorism and armed conflict.

The followed method was the analytical one, trying to disarticulate the legal figures, soon to try to understand its meaning, similarities, differences, and of course, consequences of each of them. We go to secondary sources, in its immense majority, of the doctrine of public the international law and the
international humanitarian law.

The conclusion at which it is arrived is the existence in Colombia of a situation of conflict armed internal, not of recognition of belligerence for the illegal armed groups, that does not exclude the acts from terrorism in the middle of the conflict.