Page "Conventional warfare" Paragraph 7

The majority of modern wars have been conducted using the means of conventional warfare.

Confirmed use of biological warfare by a nation state has not occurred since 1945, and chemical warfare has been used only a few times ( the latest known confrontation in which it was utilized being the Iran-Iraq War ).

Nuclear warfare has only occurred once with the United States bombing the Japanese cities of Hiroshima and Nagasaki in August 1945.