US lead wars in the middle east have been long. The shortest was the first gulf war lasted about a year.
Afghanistan lasted about 20 years. Iraq lasted 8 years. War against ISIS is ongoing at 12 years. There is nothing to suggest this will end soon.
Hyundai, Toyota, and Honda are still testing hydrogen for passenger vehicles. There are an increasing number of companies making fuel cell (semi) trucks. And, there still municipalities trying fuel cell buses. Hydrogen is still being tested for viability.
Iran wouldn't care about America if we didn't try to influence the region. They don't need a nuclear weapon to threaten us.