Welcome to the "I have shot myself in the foot with rm" club! Take a seat anywhere!
(Mine was trying to delete the old System 9 "System Folder" by typing rm -rf System\ Folder, but instead hitting the return key when it came time to hit the \, thereby starting a deletion of the running macOS 10 operating system inside the "System" folder. It got through the c's in the second and a half or so before my frantic control-C attempts halted it. Amazingly, OS X would still boot, but no longer run Carbon apps, necessitating a complete OS reinstall, lol.)
Don't worry, guys! If some country bombed, let's say for example, 2 of our buildings in NYC, would we treat that as act of war? Nah… probably not. Surely we'd just shrug and move on with peace negotiations!