http://www.newsweek.com/what-potassium-iodide-do-demand-drug-spikes-fears-nuclear-war-ukraine-russia-1688033

As Russia's invasion of Ukraine continues, the placement of its nuclear arsenal on alert and the attacks on Ukraine's nuclear facilities is driving the demand for potassium iodide pills.

The reason for this is the fact that potassium iodide can offer limited protection for radioactive material released during such a nuclear incident. Yet, despite this, Specialists in Radiation Protection, HPS, warn that potassium iodide is not a "magic bullet" for radiation protection.