NEWYou can now listen to Fox News articles! President Donald Trump’s allies are warning that British Prime Minister Andy Burnham’s appointment of Ed Miliband as foreign secretary could strain the U.S.-U.K. relationship, citing Miliband’s history of attacking Trump and his support for net-zero energy policies.Burnham appointed Miliband Monday, replacing Yvette Cooper and completing a remarkable political comeback for the former Labour Party leader. Miliband led Labour from 2010 until the party’s defeat in the 2015 general election and most recently served as energy security and net-zero secretary under former Prime Minister Keir Starmer.The appointment makes Miliband Britain’s top diplomat and...