Ukraine risks a major toxic spill by placing military assets at an ammonia pipeline, the Russian Defense Ministry has warned The Ukrainian military is trying to provoke a major ecological disaster close to the front line and blame it on Russia, the Defense Ministry in Moscow warned on Thursday. The accusation came from Maj. Gen. Aleksey Rtishchev, the commander of Russia's Nuclear, Biological and Chemical Protection Troops, who briefed the public about alleged Ukrainian violations of an