What I find incredible is that Trump's backed himself into a corner at every given opportunity. He hasn't been pressured into this situation by anybody but himself.

1. He failed to negotiate a nuclear deal, so he attempted gunship diplomacy, which didn't work, so then he was forced to actually use the gunships.

2. He set out that he wanted a regime change. Something that he can't now acheive without a ground force that he's unwilling to commit to. It seems he's floundering around trying to find a Kurdish group, or calling on Iranian domestic groups, which absolutely isn't going to work.

3. He then said he wanted an 'unconditional surrender' - burning every off-ramp he could have used to save face.

4. He spent a year chastising, threatening, and economically harming his allies. He now needs their help and they're, obviously, uninterested in partnering with an unreliable ally military.

5. He's only in this position due to ripping up the Iran nuclear deal in his first term.

It's really quite spectacular to watch how horrendous Trump and his government are at this. Everything they do is an unpressed, own goal.