From what I understand, the Swiss had managed a "Mexican stand off" with the Germans. Their defence was real strong with their ability to blow up their own railway tunnels & sever a link the Germans needed. The Swiss managed to straddle the fence & hold their neutrality throughout the war. Did a much better job than compared to Ireland, as they actually prospered financially at the end. An accurate estimate of how much they hid from the allies after the war, in my opinion, was never really answered. But I am far, far, far, away from being any kind of expert...