Zelensky says Ukrainian troops advanced 15 km underground near Kupiansk

Ukrainian forces killed more than 100 Russian soldiers and captured more than 30 in Operation Veles near Kupiansk, Zelensky said on Oct 27.

Underground advance

15 km

The National Guard's 2nd Khartiia Corps advanced more than 15 km through underground gas pipelines, Zelensky said.

Background

Russian troops used a gas pipeline to cross the Oskil River near Kupiansk in September, according to the monitoring group DeepState. Zelensky said Ukraine turned the tactic into a more sophisticated one.