Luxury life do not make you weak - being well-stocked is helpful in fact. Any country can be surprisingly resilient with good management of resources. Ukraine has demonstrated impressive capacity to fight a war while up against heavy odds. Many were expecting Ukraine to fold in a matter of weeks but Ukraine proved all wrong.
Europeans might look sissy but they still have much fight in them - more so then big boasters in Islamic countries. Perhaps some European states are sissy but not all.
I am not sure how resilient Israel is, but I expect it to be well prepared in view of its security environment. But I do not know much about this.