Sweden, Finland and Norway have advised citizens to keep iodine tablets at home in preparation for the worst-case scenario ...

There has been a rush to buy medical iodine in Russia's far north, following a brief radiation spike linked ... take-up of radioactive iodine, but the pills can also cause medical problems.

In some areas, officials are already handing out the pills, which can stop the body absorbing radioactive iodine. Residents have been told only to take it if a radiation leak is confirmed.

Vladimir Putin's recent threats of nuclear weapon use are deeply concerning. A nuclear war would have catastrophic ...