States That Acceded to Chemical Weapons Conventions

The Chemical Weapons Convention (CWC) is an arms control treaty that aims to eliminate the production, stockpiling, and use of chemical weapons. The treaty was opened for signature in 1993 and entered into force in 1997.

As of 2021, 193 states have acceded to the Chemical Weapons Convention. This includes:

- All 193 member states of the United Nations
- Non-member states such as the Holy See and the State of Palestine

Acceding to the Chemical Weapons Convention requires states to declare and destroy any chemical weapons they possess, as well as to refrain from developing, producing, acquiring, stockpiling, or using chemical weapons. States are also required to establish a National Authority to oversee the implementation of the Convention within their territory.

The CWC is widely regarded as a successful arms control treaty, with the vast majority of states in the world having joined the Convention. However, there have been some instances of non-compliance, particularly by states that are not party to the Convention.

In summary, the correct answer is option C: 193 states have acceded to the Chemical Weapons Convention.