Russia will train its troops in Ukraine to use tactical nuclear weapons on the battlefield, Moscow has said.The training exercises will involve Iskander-M ballistic missiles and various aircraft, Moscow’s defence ministry said in a statement published on the Telegram messaging app.“During the exercise, issues of preparing units of the armed forces of the Russian Federation for the combat use of non-strategic nuclear weapons will be worked out,” it said.“As part of this exercise, the personnel of the missile formations of the Southern and Central military districts will work out combat training tasks of obtaining special training ammunition for the Iskander-M...