(ANSA) - BERLINO, 28 APR - Poland does not fear a Russian nuclear attack in Ukraine, believing there is currently no indication of such an eventuality. "There are zero signs that (the Russians) would be ready for a nuclear attack," Polish Foreign Minister Radoslaw Sikorski said in an 'interview with Bild am Sonntag. In his reasoning, moreover, the chain of command that would lead to the execution of such an attack could also break down: "Putin would have to convince the generals to execute such a command. And these generals would know that such an order would lead them to become war criminals. They would then have the choice between executing the order or letting Putin fall." (ANSA).