Ukraine plans to send an advisory group to a number of countries on countering Russian drones, and some representatives from the relevant countries will study in Ukraine, President Volodymyr Zelenskyy has said. I will not say with which ones yet, although some things were public, we gave signals to some countries. We will send an advisory group to some countries – our people on how to counter such steps. Some representative countries will study in Ukraine. We simply agreed, so far without specifics regarding these countries," Zelenskyy said during a briefing on Saturday.