https://www.vice.com/en_us/article/88qnw5/russian-military-is-bombing-ukraine-with-grenades-in-plastic-cups > A video posted in a pro-Russian Telegram channel shows Russian soldiers dropping a grenade in a plastic cup from a drone. It’s a cheap and, sometimes, effective improvised explosive device that puts a little delay on a grenade before it hits the ground. > It’s also a bizarre scene from the frontlines of a war fought by a country that spends north of $60 billion annually on its military and brags about advances in everything from nuclear weapons to submarines.