WARSAW Polish Foreign Minister Radoslaw Sikorski on Monday warned that Russia could be ready to attack Europe by the end of the decade if Ukraine is forced to surrender. “Russia is currently unable to win against Ukraine alone, so it would not be ready for a broader offensive immediately,” Sikorski told commercial Polish radio TOK FM.” “But if Ukraine were forced to capitulate, and if Russia took over its army … then this calculation would change,” he added. Sikorski added that in such a