I'm not sure I understand it, either, unless he were to become all-too certain that Iran was going to do something stupid and turn the gameboard upside-down (so to speak) by inviting total occupation of the Middle East by foreign forces.
Syria's a mystery to me. But it's undeniable they've been pretty brazen about raising up insurgents with our army next door. If anything, our lack of resolve in rooting out the Syrian factor in Iraq has probably sent them the message that our hands are full and will avoid confrontation at all costs.
A few flights of F-117s could disabuse them of that notion in a single evening. They'd never know, although they'd suspect, what hit them. Bombs would just start falling out of the sky one night. And not all that many bombs either. A dozen or so could do the job. (At two per F-117). Or we could use the B-2, and then that couple of flights becomes a half dozen or so aircraft.