President Trump gave an ominous warning at a dinner with military leaders Thursday night: "You guys know what this represents? Maybe it's the calm before the storm," he said. "It could be the calm... before... the storm."

Asked what the storm would be — "Is it Iran, ISIS, what's the storm?" one reporter called out — Trump replied, "you'll find out."

Bottom line: With Trump, it's difficult to tell what's bluster and what's a hint of things to come.