How many country do not participated in any war?

While it's challenging to provide a precise number, several countries are often considered to have maintained a stance of neutrality or non-participation in wars for extended periods. Notably, countries like Switzerland and Costa Rica have established policies of neutrality and have not engaged in military conflicts for many years. However, most nations have experienced some form of conflict or war, either directly or indirectly, making the number of truly war-free countries quite small.