

Nothing Russia has done including (or since) the invasion in 2022 was smart. It was all stupid.
Russia’s wasted a million soldiers on grabbing a rather small amount of Ukrainian land. They’ve destroyed their own economy, their trade relationships with most of the world, and their demographic future. Take a million men off the streets of most countries and it’s going to crash your population within a generation or two.
Perhaps this map will help:
To get from Iran to Israel, the Iranian soldiers would have to cross Iraq (and Jordan) or Syria, both very unfriendly countries full of mountainous terrain. Not a viable ground invasion whatsoever!