Iran Ramps Up Chemical and Biological Weapons Capabilities After Nuclear Setbacks
Iran is significantly ramping up its chemical and biological weapons (CBW) capabilities, especially after setbacks to its nuclear program. The regime possesses sophisticated chemical agents, including pharmaceutical-based agents (PBAs) and Novichok, with evidence of PBA use against civilians. Its biological arsenal comprises lethal venoms and virulent viruses like H5N1. Despite attacks on some facilities, Iran is modernizing delivery systems, such as ballistic missile warheads, and may pursue radiological weapons. These efforts highlight a persistent disregard for international conventions.
Following reported setbacks to its nuclear weapons program, Iran is significantly escalating its development and stockpiling of chemical and biological weapons (CBW), leveraging a decades-long pursuit in these areas. The regime possesses a formidable array of chemical agents. Its first-generation includes traditional agents like mustard and sarin. Second-generation chemical capabilities involve sophisticated Pharmaceutical-Based Agents (PBAs) such as fentanyl and medetomidine derivatives, developed by the IRGC, with alleged operational use in the 2022 and 2026 protests, causing symptoms ranging from anesthesia to fatalities. Iran has also demonstrated the synthesis of highly potent Novichok nerve agents at the Defense Chemical Research Laboratory, masked as contributions to international databases.In biological warfare, Iran’s first-generation includes known pathogens like plague and anthrax. Its second-generation features upgraded lethal snake venoms, specifically Caspian cobra venom refined and encapsulated at the Razi Vaccine and Serum Research Institute for enhanced dispersibility. Furthermore, Iran has meticulously investigated highly virulent viruses causing smallpox-like diseases, hemorrhagic fevers (including Ebola and Marburg), and crucially, obtained highly pathogenic H5N1 avian influenza strains from Indonesia under the guise of vaccine development.While some CBW-related facilities were targeted in 2025-26 attacks, the article suggests these strikes will not severely deter Iran's renewed efforts. The regime is actively upgrading its delivery systems, aiming to weaponize ballistic missile cluster warheads with chemical and biological payloads, and may seek empty warheads from allies if domestic production is constrained. There is also a distinct possibility of Iran pursuing radiological weapons as a sub-nuclear weapon of mass destruction. These pervasive efforts underscore Iran's strategic shift and persistent disregard for international non-proliferation treaties.
