The White House indicated Monday that President Donald Trump would be open to military cooperation with Russia to fight Islamic State, a move that would be a big policy change for the U.S. government, and one that would run afoul of current law. “I think if there’s a way that we can combat ISIS with any country, whether it’s Russia or anyone else, and we have a shared national interest in that, sure, we’ll take it,” White House spokesman Sean Spicer told reporters, using an acronym for the militant group.