What are chemical weapons?
- “The term
     chemical weapon is applied to any toxic chemical or its precursor that can
     cause death, injury, temporary incapacitation or sensory irritation
     through its chemical action.”
 
- Chemical
     weapons are classified according to how they affect human
     beings: 
 


1.    
Choking agents like chlorine gas make
breathing difficult. 
2.    
Blister agents like mustard gas can
cause severe skin and eye irritation. 
3.    
Arsenic- or cyanide-based blood agents
are often fast-acting and lethal. 
4.    
Nerve agents like sarin or VX disrupt
the nervous system.
There are also plenty of gray areas: 
- Under the Chemical Weapons Convention, riot-control
     agents such as tear gas are considered chemical weapons if   they’re used during war — but not if they’re
     used for law enforcement. 
 - And there are all sorts of technicalities over the use
     of white phosphorus, an incendiary weapon that has
     been used in recent years by both the United States and Israel.
 
- The taboo
     against chemical weapons is more than a century old. 
 - “The primary
     idea is that they are indiscriminate and an inherent threat to civilian
     populations,” 
 - “The kernel of
     that really arose in the aftermath of World War I. 
 - Chemical weapons
     were used on a wide scale in that conflict. 
 - There was a real
     fear, particularly as air technology got better, that there’d be massive
     chemical attacks on cities.”
 - Now, granted,
     regular bombs can be deadly and indiscriminate too. 
 - But for a
     variety of historical reasons, a set of international norms developed
     around chemical weapons that never developed around conventional
     explosives. 
 - By World War II,
     most countries had voluntarily ruled out the use of chemical warfare on
     the battlefield.
 
Are chemical weapons banned under
international law?
- Yes. 
 - The 1925
     Geneva protocol first prohibited the use of poisonous gas as a weapon
     of war. 
 - The
     1993 Chemical Weapons Convention then went even further
     and outlawed the production, stockpile, transfer and use
     of chemical weapons. 
 - Countries that
     ratified the treaty pledged to destroy their existing stockpiles.
 
Not everyone has signed
that 1993 treaty, however. Syria, North Korea, Egypt and Angola are notable
omissions. Israel and Burma, meanwhile, have signed the treaty but not ratified
it:
Which countries currently possess chemical
weapons?
- At
     least five countries still have officially declared stockpiles: The United States, Russia, Libya, Iraq, and
     Japan (the latter’s weapons
     were left in China after World War II). 
 - These
     nations have all pledged to destroy their remaining stocks, but progress
     has been slow: As of July 2013, there are still more than 13,000
     tons of chemical agents left.
 
That’s not all, though.
The U.S. intelligence community believes that Syria, Iran, and North
Korea all have their own covert chemical arsenals. Syria, in particular, “maintains a stockpile of numerous chemical
agents, including mustard, sarin, and VX.”
- There are
     also a number of other countries that may have
     chemical weapons or the facilities for producing them, but public information
     is murky. 
 - The
     list of possible suspects includes: Burma,
     Egypt, Pakistan, Serbia, Sudan, Taiwan and Vietnam.
 
Which countries have used chemical weapons?
- During the Yemen
     civil war of 1963-1967, Egypt used mustard gas, phosgene, and
     tear gas against royalist forces. 
 - And in 1987,
     Libya allegedly used chemical weapons against Chadian troops. 
 

- The most
     notorious recent incidents have come in Iraq. 
 - Saddam Hussein
     used various gases on a wide scale in his war against Iran and then later
     in his campaign against Iraq’s Kurds in the late 1980s. 
 - His general in
     that effort, Ali Hassan al-Majid, was given the nickname “Chemical Ali”.
 
Did Iraq get punished for
using chemical weapons?
- After the Iran-Iraq war, there was no response. All the U.N. could muster was a weakly worded condemnation of chemical weapons that didn’t name names. And the U.S. was in no rush to see Iraq punished, as they didn’t want to see Iran win.
 - Later on, however, the U.N. Security Council did pass a number of resolutions to disarm Saddam Hussein. And, in 1998, the U.S. launched Operation Desert Fox, a four-day bombing campaign intended to “degrade” Iraq’s weapons capabilities — chemical, biological, and nuclear — after Hussein kicked out U.N. inspectors.
 
Focus ---- >>>
SYRIA 

- The Syrian government is thought to possess large stocks of nerve agents (sarin and VX)as well as mustard gas, likely weaponized into bombs, shells and missiles.
 - It also may have some production facilities.
 - Syria “probably”
     first began stockpiling chemical weapons in 1972 or 1973, when Egypt gave
     the country a small number of chemicals and delivery systems before
     the Yom Kippur War against Israel.
 - The Soviet Union
     later supplied chemical agents, delivery systems and training. Syria is
     also “likely to have procured equipment and precursor chemicals from
     private companies in Western Europe.” 
 - According to the
     report, Syria doesn’t yet appear to have the capacity to produce the
     weapons entirely on its own, relying on outside help for precursors.