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The U.S. and others will not allow foreign inspections of their Nuclear Facilities either. That's why i said the Iran Deal is very flawed and doomed to failure. Why should some nations be forced into inspections, while others aren't?
But regardless, it would be very unwise to push the Israelis too much. They will survive. They've made that very clear.
Just like kids in a schoolyard, there is a pecking order among the world’s countries. Like the kids, countries know each other’s relative strength, who their current friends are, and who is likely to turn on them given the chance.
If a country or alliance of countries feels they can promote their own safety by forcing a country viewed as a threat to submit to nuclear inspections, they will. Sanctions, threat of military action, or actual military action may be used to encourage inspection compliance.
Of course, the threatening country could sense the weakness of those making inspection demands. In this case, they could possibly negotiate an agreement that allows them to do what they want while providing an illusion of compliance. It makes everyone happy – for awhile.
In summary, you shouldn’t waste your time demanding someone’s lunch money unless you are bad enough to ultimately take it.