His words are quoted by RIA Novosti. 

“This reaction shows that we didn’t just hit them to the quick, we got to the root of the problem.

The degree of irritation in the relevant comments cannot be underestimated,” Ryabkov said of the reaction of Russia’s opponents.

He added that Russia will continue to expose violations of the Convention on the Prohibition of Biological and Toxic Weapons, as well as promote this topic at the BTWC Review Conference.

Earlier, Russia's permanent representative to the UN, Vasily Nebenzya, said that the United States was deliberately blocking the strengthening of the regime of the Bioweapons Convention.