This week, Donald Trump picked fights with Canada, Mexico, Ukraine, US veterans and every Democrat sitting in Congress for his State of the Union address. Chris Michael and Joan E Greve discuss why the US president is turning up the heat on longtime allies, whether Democrats are responding successfully and, in the end, who loses out if Trump’s tactics fail? Send your questions and feedback to [email protected] Help support the Guardian by going to theguardian.com/politcspodus