The basis for these sanctions is totally unsubstantiated. These punitive measures are deliberately antagonistic and reflect an outrageous double-standard, as the Western 'allies' that have sanctioned Iran over these allegations are the primary suppliers of weapons to the Israeli regime amid an ongoing genocide against the Palestinian people. The leaders who enacted these unjust sanctions should be held accountable.
Iran provided ballistic missiles, training, and other military support to Russia in the full-knowledge that Moscow's illegal invasion and ongoing military activity in Ukraine directly threatens European security. This offense warranted the swift and serious response delivered. While some people may be inconvenienced by the impacts on Air Iran, this ban is one of several sanctions that will serve to deter future support for Russia.
There's a 2% chance that the US and Iran will be primary actors on opposite sides of a war before 2025, according to the Metaculus prediction community.