It's hard to tell if Donald Trump's recent comments about his readiness to disregard treaty obligations if U.S. allies didn't live up to their promises to increase defense spending were more shocking to American allies and partners or U.S. analysts and strategists.

Stunning as his remarks were, the rest of the world appears to have priced in the former president’s disdain not only for allies but the entire global order his predecessors created.

Even if Trump doesn’t win the November election, that thinking and approach will remain a constant concern of U.S. allies — and adversaries. The genie is not going back into the bottle.