Thats how it starts Vietnam started with just a few "military advisers" that grew to 16,000 "military advisors" followed by combat troops 184,000 by 1966, and 536,000 by 1969. The US had total air supremacy and overwhelming firepower, dropped 3 times the total amount of bombs in WW2 won every battle. The Viet Cong mainly relied on guerrilla/ terrorist tactics there was no way they could compete against the US/South Vietnam forces as far as military hardware or ordnance yet we all know who won that war. Iran is hardly going to just sit back and allow the US or Israel to land on its soil without doing anything about it. Bodybags returning to the US would likely evaporate any support there may be in the US at the moment which doesn't appear to be all that high anyway. That could prompt the US to withdraw from Iran altogether in fact support for Israel could even evaporate leaving it in a very vulnerable position. The US is making the same mistakes and flawed assumptions it did in Vietnam. Vietnam didn't really affect the rest of the world outside of the participants and region this time its affecting a very large proportion of the world energy supplies.
