In today's episode we discuss past chemical warfare agent attacks and talk about the different classes of agents and what they are used for.
Thanks for joining me today.
As we start the new year, I just wanted to say thanks to all of
you. In just a few months, this project
has gone from no listeners to over 300 subscribers. Thanks for sharing this podcast with your
friends and feel free to share it with a few more. As always, my references are found on my
website sci-vs-fear.com. Please stop by
and take a look.
In future episodes, I plan on looking at some of the
chemical warfare agents or CWAs in-depth, but before I do, I wanted to talk about
the group as a whole to provide the big picture. So what is a chemical warfare
agent? A chemical warfare agent is
simply any chemical that is used to harm or kill people.
WWI chemical warfare
While there are other historical instances, chemical warfare
agent use began in earnest in WWI. The
first use was in August of 1914 when the French used teargas in the battlefield. By October of 1914, the Germans had deployed
over 3,000 shells of chlorosulfate, although they were relatively ineffective
as the chemical was mostly destroyed in the explosion.
In January 1915, the Germans tried again against the
Russians using xylyl bromine, but this time it was ineffective due to the
extreme cold. In April of that year, the
first large scale deaths (~1100 with 7000 injuries) due to CWAs are documented
at Ypres, Belgium where the Germans deployed almost 170 metric tons of chlorine
gas. Chlorine gas tends to sink and so
was quite effective in trench warfare applications, assuming the wind didn’t
blow it back into your trench.
By September, the British begin using chlorine against the
Germans. Shortly after that, the Germans
introduce phosgene. So began a CWA arms
race. By 1918, nearly 10% of all US
arterial shells contain mustard.
Interestingly, Adolf Hitler was temporarily blinded by Mustard in
October shortly before the end of the war.
There is some supposition, that this is the reason Germany didn't use
more CWAs during WWII. All told, there
were more than 1.3 million casualties and 90K+ deaths due to CWAs (mostly
phosgene) during WWI.
WWII chemical warfare preparations
In the run-up to WWII, most nations developed mustard and
nerve agents. Among these are sulfur and
nitrogen mustard, tabun, sarin, soman, and VX.
Many of these compounds were discovered in pesticide research, but most
nations had a specific CWA development program.
In 1972, the Biological and Toxin Weapons Convention sought to end all
offensive research into CWAs. This was
moderately successful with countries like the US and Britain abiding, with
other countries, Russia, Iran, Iraq, and others, continuing with research and
production. https://www.sciencehistory.org/distillations/a-brief-history-of-chemical-war
Tokyo sarin chemical weapon attack
Let's look at two well-known uses of chemical weapons. The first is of interest to developed countries, as our largest threat from CWAs is terrorism. On 20 March 1995, a Japanese cult known as the Uhm-Shinrikyo released sarin on the Japanese subway. Their attack was fairly crude, but it got the world's attention.