Why go through the trouble of using drone, just use a barrage conventional missiles, hypothetical country is unlikely to have anti-rocket system like iron dome
I'd assume systems like that require something like an army are regulated and in control of nation states. My point was something like a few hundred thousand drones could probably stealthily be acquired by a wealthy individual. If it's autonomous and remotely controlled you might not even know who's behind it
OK, but in this scenario, the wealthy individual is trying to do what? Take over the country?
Fine. Let him. When he does so, he quits being anonymous. Then assassinate him and restore the previous government. Bonus style points if you assassinate him with a drone.