Russian troops have triggered a chemical disaster in Ukraine after clashes lead to a pungent cloud of lethal ammonia being released into the air.
Local officials reported at the end of May that Vladimir Putin's forces had loosened the "Togliatti-Odessa" ammonia pipeline during a military operation.
The fighting lead to the gas being released into the skies near Bakhmut in Ukraine's Donetsk region, the site of the war's new front line.