The US is preparing to escalate its war with Iran, and the argument here is that it's a trap with no real military win in sight.

• The Pentagon is surging troops and moving fighter jets and bombers into the Middle East, signaling a bigger war ahead.
• More than 150 combat medics were sent to a US hospital in Germany, a sign the US expects more of its own troops to die.
• Bombing Iran for weeks has not worked — Iran reportedly still has 70% of its missiles, and a ground invasion would be brutal given Iran's terrain and decentralized government.
• The war is also hitting the global economy: the Houthis have blocked Saudi oil routes through the Red Sea, and Gulf oil infrastructure is damaged.
• Congress just approved close to $100 billion in extra war funding, more than the Pentagon even asked for.

Outlook: No clear off-ramp, with fears that boots on the ground or even nuclear weapons could come into play if Trump keeps pushing instead of pulling back.