Ukrainian investigators have managed to inspect drones shot down by Kyiv's military, and inside, they've found Western-made hardware pieces that steer, guide, and power the killer drones, the Wall Street Journal reported Friday, citing an analysis.Weapons experts told The Wall Street Journal that Iran has been able to reverse engineer and pull pieces from downed and captured drones from countries like the US and Israel.The Shahed-136 drone has emerged in recent weeks as a weapon of choice for Russian President Vladimir Putin's troops, who have used the systems to attack and terrorize Ukrainian cities far from the war's front lines as they continue to suffer setbacks on the battlefield.Speaking next to a downed Shahed-136 drone, Ukrainian President Volodymyr Zelenskyy said on Friday that his forces managed to neutralize 23 of the more than 30 drones that were fired by Russian forces over the last two days.To help Ukraine counter the explosive suicide drones, as well as other unmanned aerial vehicles, NATO Secretary General Jens Stoltenberg announced last week that the military alliance would send "hundreds" of signal-jammers to the eastern European country."