[Dottore]

Those are very normal non-compete clauses. Nothing onerous about them. My guess is that you will not be able to negotiate them.

If you are ever in the position where you breach one of those clauses, the onus will be on your former employer to show that the non-compete was reasonable under the circumstances. If the US Govt. really is the only customer/client in your neck of the woods, that will be a difficult onus to discharge.

In other words, I wouldn't worry too much about these clauses.