our headlines... protests against covid vaccine laws continue in canada — truckers had earlier blocked a key route into the us. after another frantic day of diplomacy over ukraine — poland warns it's the worst crisis in europe for more than three decades let's turn to the winter olympics now being held in china. there are an unprecedented number of foreign—born athletes competing for china at these winter olympic games, many of them hailing from north america. one of the stars of the games is the freestyle skier, eileen gu, who was born in the united states but has chosen to compete for china. the californian—born athlete won gold for china at the beijing olympics on tuesday. athletes like eileen gu face a complicated balancing act, with their ethnic and national identities pulling them in different directions. dr susan brownell is