Ammonia pipeline shelling raises fears of environmental disaster in Ukraine.

The world's largest ammonia pipeline, which carries gas from Russia's Volga river to the Black Sea, has been shelled in Ukraine's Kharkiv region, triggering fears of another environmental disaster. The pipeline has been out of operation since Putin's invasion of Ukraine in February 2022, but large quantities of ammonia gas are still trapped in the pipeline. The alleged site of the attack is located in the 'grey zone' between the warring sides. Both Russia and Ukraine have blamed each other for the attack.