Chemical warfare
| Weapons of mass destruction |
| Nuclear weapons |
| by country |
| Biological weapons |
| Chemical weapons |
| Radiological weapons |
| Reports by country |
| Canada |
| China |
| France |
| India |
| Iraq |
| Israel |
| North Korea |
| Pakistan |
| Russia |
| Taiwan |
| United Kingdom |
| United States |
| Iran's nuclear program |
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- Nerve agents
- Mustard agentss
- Hydrogen cyanide-based agents
- botulinum
- Arsines
- Toxins
- Tear gases
- pepper spray
- Incapacitating agents such as
- Psychotomimetic agents
- Potential chemical warfare agents
History
The first major use of chemical warfare agents was during World War I, with the use of various agents including chlorine, mustard gas, and phosgene gas. They were not extensively used during World War II due to the fear of retaliation and because chemical weapons are of limited use in a mobile front in which their use would slow the advance of one's own troops. In addition chemical warfare requires supply from railroads which was available in the fixed fronts of World War I, but not the mobile fronts of World War II.
Chemical weapons were also extensively used by both sides during the Iran-Iraq War and are believed to have been used by Iraq against Kurdish civilian populations.
The use of chemical weapons is generally abhorred in international law, and there are many rules to discourage or make difficult their acquisition and use. Of these the most important is the Chemical Weapons Convention.
A UN working group began work on chemical disarmament in 1980. On April 4, 1984 U.S. President Ronald Reagan called for an international ban on chemical weapons. U.S. President George H. W. Bush and Soviet Union leader Mikhail Gorbachev signed a bilateral treaty on June 1, 1990 to end chemical weapon production and start destroying each of their nation's stockpiles. The multilateral Chemical Weapons Convention (CWC) was signed in 1993 and came into effect in 1997. The Organization for the Prohibition of Chemical Weapons declared that at the end of 2003, 8000 metric tons of chemical agent had been destroyed worldwide from a declared stockpile of 70,000 metric tons. For its part, by 2003, the United States had destroyed 23% of its total chemical arsenal, although doubts existed whether it could reach total elimination by the treaty deadline of 2012 due to technical difficulties and environmental regulations. India, South Korea, Russia are destroying chemical weapons stockpiles under the CWC and Libya dismantled its program under other means. The U.S. has declared that it believes that Russia is circumventing the treaty by developing novel chemical agents. In addition, the People's Republic of China, Cuba, Egypt, Iran, Israel, North Korea, Pakistan, Sudan, Syria, Taiwan, Serbia and Montenegro are suspected of possessing chemical weapons.[1]