By Yurii Kovalenko, Anastasiia Malenko and Vladyslav Smilianets KYIV (Reuters) -Several nights a week, Daria Slavytska packs a yoga mat, blankets and food into a stroller and descends with her two-year-old Emil into the Kyiv subway.

Shahed-style drones are deadly systems that Russia has been using to strike Ukrainian cities for nearly three years.

Ukraine’s military commander in charge of the country’s drone warfare program urged the US and NATO countries alike on Wednesday to learn from Kyiv’s use of the technology on the battlefield so in the future there are not “hard questions from your children [about] when [their] father will come back.