Afghanistan and Vietnam didn't beat their adversaries through advanced military technology, but by the shear capacity to absorb unholy amounts of damage and injury. Arguably Iran is in a similar position, though its Shahed drones and ballistic missiles did prove capable of reaching out and touching others within the theatre (1,000 -- 2,000 km range), and that these systems were resilient against attempts by its adversaries to destroy both stocks and launchers.

Ukraine is the odd one out in that it has developed significant technological capabilities, largely with drones and anti-drone defences, and has active buyers for that tech.

Iran did supply Russia with Shaheds long before the current US attack on Iran, so they were at the fore front of drone technology (though if I recall correctly the design had evolved through time over adoption from other countries, perhaps originating in Germany?)

Which makes the US refusal to interact with, learn from, or adopt Ukrainian tech all the more frustrating. There are 13 US fighters that would likely still be alive today, if the current US establishment was t so irrational in their hate of Ukraine, and had adopted anti drove tactics common in Ukraine, including the P1-SUN interceptors that could have taken out the shaheds. Losing an AWACS is an embarrassment beyond words, honestly. Best thing would not have been to start a stupid unwinnable war without any clear objectives.