Thousands of Ukrainian citizens living in Poland have signed up to join a planned volunteer brigade, Polish Foreign Minister Radosław Sikorski said in Washington on Wednesday. On the sidelines of the NATO summit, Sikorski said: “Many of them really want to serve and make a difference to their compatriots on the front line, but they say: ‘We don’t want to be sent into battle without the right training and equipment.'” Poland, which has hosted almost 1 million Ukrainian refugees since Russia’s full-scale invasion in February 2022, is to train and equip the volunteers before their deployment in U…