WARSAW (Reuters) - Ukraine is reaping "huge political gains" from its military offensive into western Russia but the incursion is not altering the "anti-escalation approach" of the West, Polish Interior Minister Tomasz Siemoniak said.Ukraine says it has seized more than 80 settlements over 1,150 square km (444 square miles) in Kursk since Aug. 6 in the biggest invasion of Russia since World War Two. Reuters could not independently verify the battlefield developments."This offensive does not change the anti-escalation attitude of the West," Siemoniak said, asked in an interview with Reuters late on Friday if Kyiv's military gains could change its...