Time is on their side - except for the embargo. That stops 90% of their revenue and that's a very real thing.
It's interesting to see how far they think they can get away with this, but they are not in an easy situation.
Soldiers and civil infrastructure don't last on $0.
That money stops is the 'most likely thing' that will cause a real revolution.
Both sides are hoping for 'regime change' by embargo it seems!
Sanctions don't work on enemies. We've had what? 4 years of sanctions on Russia now? How's that going? Iran has had over 40 years of almost uninterrupted sanctions. How was that going? North Korea?
Sanctions force an enemy to build an economy to withstand those sanctions. This is easier when you can grow food, have water and have energy. Also, they've built their entire military to resist the one card you can play: strategic bombardment. Cheap missiles, super-cheap drones, both easy to produce and launch and underground facilities that are largely immune to bombing.
Strategic oil reserves are getting perilously low [1] and everybody understands that Trump would rather let the world burn than restrain Israel in the slightest.
[1]: https://archive.ph/lWiwl