Iran oil

A group known as Islamic Resistance in Iraq claimed responsibility for the killing of three American troops in Jordan. Many believe that this group receives weapons and military advise from the Iranians. This begs the question is it okay to attack Iran because they are supplying terror groups with weapons. If the answer is yes is it then okay for Russian to attack Germany because they are sending equipment to Ukraine. Is it okay for Hamaz to attack Americans because the US is supplying weapons to Israel. Much of the oil that China needs comes out of the Persian Gulf. The US could blockade the Straits of Hormuz and allow all oil ships through but turn back any Iranian ships. This would allow commerce to continue to the rest of the world while cutting off the oil money to Iran. This is done without a military attack and would put the ball in Iran's court.