And any chemistry

United States of America declared a complete elimination of the stocks of the chemical weapon — 31,5 thousand tons of poisoning substances. The last samples were stored in staff by Kentucky. Russian Federation declared completion of all similar procedures in 2017, having destroyed nearly 40 thousand tons. Thus, main objectives of the Convention signed in 1993 about prohibition of the chemical weapon can be considered reached: in total "publicly declared" stocks of poisoning substances were destroyed. However, a keyword here — "declared". newspaper "Kommersant" decided to remember how the world came to need of a ban and destruction of the chemical weapon and why even now...