What treaty is known for outlawing biological warfare?

The Geneva Protocol of 1925 is significant because it specifically addresses the prohibition of the use of chemical and biological weapons in warfare. It marks an important step in international arms control and reflects the recognition of the devastating effects such weapons can have on human health and the environment. The protocol was developed in the aftermath of World War I, which showcased the widespread use and horrific consequences of chemical weapons.

While the other treaties mentioned play essential roles in arms control, they do not specifically outlaw biological warfare in the way the Geneva Protocol does. The Hague Convention of 1907 primarily focused on the laws of warfare but does not explicitly address biological weapons. The Chemical Weapons Convention, on the other hand, deals strictly with the prohibition of chemical weapons and does not extend to biological agents specifically. The Nuclear Non-Proliferation Treaty is focused on nuclear weapons and prevents the spread of nuclear weapons technology. Thus, the Geneva Protocol of 1925 is rightly recognized for its direct stance against biological warfare.