Ukraine killed Iranians who were advising Russians on how to pilot Iranian-made drones in Crimea, Ukraine's top security official confirmed, per a report.We didn't invite them here, and if they collaborate with terrorists and participate in the destruction of our nation we must kill them."Iran initially denied having supplied Russia with drones, which are often called "kamikaze" or "suicide" drones because they detonate on impact.Ukraine has cast doubt on Iran's claims, and the military has claimed it has evidence to suggest some of the drones were supplied after Moscow's invasion in February.Danilov's comments confirm previous reports in the Israeli press from October which said that 10 Iranian advisers have been killed through Ukrainian strikes on Crimea."