France’s feud with the US ambassador to Paris took another turn on Tuesday with the French foreign minister saying the top US diplomat in France must explain himself after ignoring a French summons. The minister suggested that Ambassador Charles Kushner will not have access to French government officials until he complies. French authorities had summoned Kushner, the father of US President Donald Trump’s son-in-law and adviser Jared Kushner, for a meeting on Monday evening over comments from the...