On 29 April 1997, the Convention onprohibition of chemical weapons. Its participants were 188 of the 198 member states of the United Nations. Egypt, Somalia, Syria, Angola and North Korea did not join it, and Israel and Myanmar signed, but have not yet ratified the treaty. The presence of chemical weapons on its territory was officially recognized by the United States, Russia, the Republic of Korea, India, Iraq, Libya and Albania. Most of all dangerous substances were found in Russia and the United States - 40 and 31 thousand tons respectively. The main obligation, which was undertaken by the parties to the Convention, was a ban on the production, use of chemical weapons and the destruction of all its reserves by April 2007. Since later it became clear that very few people will have time to do it within the set time, it was extended until April 2012. In the course of fulfilling the obligations, only three countries managed to reach the appointed date. Among them are Albania (2007), the Republic of Korea (2008) and India (2009). The rest, for certain reasons, asked for a postponement for some time. Libya disposed of only 54% (13.5 tonnes) of its chemical weapons stockpiles. This causes concern among the world community, since during the civil war the control over poisonous substances was seriously weakened. In this regard, the UN Security Council last year adopted a resolution on the non-proliferation of such weapons in this country. Russia on April 29, 2012 managed to destroy only 61.9% (24,747 tons) of chemical weapons on its territory. The main problem of such a delay is explained by the fact that the disposal of the remaining part, consisting of especially dangerous and expired substances, must be handled very carefully, since any violation of technology can lead to disaster. In addition, the elimination of chemical weapons requires huge financial costs - for seven years the country spent this program $ 2 million. As for the United States, it managed to dispose of 90% of the existing chemical weapons within a set period of time. However, the destruction of the remaining 10%, it plans to stretch until 2023. The reason for this is the same complexity of disposal and insufficiency of funds. Overall, as of the end of January 2012, 50,000 tons of toxic substances were destroyed in the world. This is approximately 73% of all stocks.