If anybody would try to use nuclear weapons in europe then we'll notice it. Problems with almost all civil communications will appear almost immediately. But it's obvious that ignorant idiots have no idea about effects of ionizing radiation on wireless communications.
If someone use nuclear in Europe it would cause a chain reaction and all major cities of the world will be targeted on thesame day. EMP will destroy most electronics, the dust will darken the world for months causing ice age. Billions will die on the same day.