Well I guess this thing might go off soon enough.
Iran warns European troops in Middle East 'may be in danger'
Could be more posturing and attempting to save face to gain local support. When you're a despot and have only known power through strength and fear and you start facing turmoil in your country you double down. North Korea does it, Mao did, Castro, etc. etc.
I think we've reached a point in geo politics wise that a war between major powers is too cost prohibitive to be involved in lesser countries.