HANOI, Vietnam (AP) — The nightmare scenario heading into the second summit between President Donald Trump and North Korean leader Kim Jong Un isn't so much "fire and fury" and millions dead.

Rather, some experts fear the meeting could result in an ill-considered deal that allows North Korea to get everything it wants while giving up very little.

There's little argument that just sitting down together again in the same room this week in Hanoi is a positive sign. But with the stakes so high, a growing chorus of experts highlight a particular risk: That Trump, burned by criticism the results of his first meeting with Kim were too vague, will ignore his more cautious aides and try to strike a deal that's cobbled together on the fly with little preparatory work.