If that means you need to at least be physically present then I'd say that's a lot of protection already. Means someone in a foreign country can't simply get lucky fuzzing.
If that means you need to at least be physically present then I'd say that's a lot of protection already. Means someone in a foreign country can't simply get lucky fuzzing.
Alternatively, small drones exist, and so do low power devices you could slingshot/shoot into a secure area and set to auto wipe after they've done their job. Maybe could even build it out of biodegradable material so it'll clean up in short time.
If you've got secret agents on enemy soil who can get near targets with drones, you're probably just bombing them.
Unless you're running out of munitions.
And nuclear isn't exactly a great option.