And it only wasn't invaded because the entire country was (and is) a standing army, and Germany would have to pay dearly for every mile they tried to take. IIR

And it only wasn't invaded because the entire country was (and is) a standing army, and Germany would have to pay dearly for every mile they tried to take. IIRC they even shot down german war planes that entered their airspace and suffered no retaliation. So yeah, they do have a knack for maintaining their neutrality.