From Stars and Stripes about American military presence in Europe:

"Whether the U.S. military needs to maintain an expensive and robust military presence in peaceful western Europe will likely be the crux of the debate, according to Alexander Cooley, an international relations professor at Barnard College, who also has authored a book about the politics of U.S. overseas basing policies.

“It’s a conversation we need to have,” Cooley said.

“We can’t just keep spending at these levels as if everything else is equal. The Pentagon budget has to take a hit. In an ideal world you can keep everything, but that’s not the case. You have to make choices.”"