Donald Trump is wrong about NATO. The MAGA who applauded him are morons.
NATO members are under no obligation to help the United States in the war against Iran. Art.5 does not apply because the US was not attacked, it is the aggressor. In addition, the treaty does not apply to attacks in the Middle East. Furthermore, if they joined US attacks on Iran, the countries would be violating Art. 2 of the UN Charter more than they are already by allowing the United States to use bases in their countries for its illegal attacks against Iran.
NATO members the UK, France and Germany are allowing the US to use bases in those countries to support attacks on Iran. Spain refused. The US and Israel war on Iran violates Art. 2 of the UN Charter:
UN Charter
Art.2
[excerpt]
3. All Members shall settle their international disputes by peaceful means in such a manner that international peace and security, and justice, are not endangered.
4. All Members shall refrain in their international relations from the threat or use of force against the territorial integrity or political independence of any state, or in any other manner inconsistent with the Purposes of the United Nations.
Arguably, France and Germany are violating Art. 2 of the UN Charter by allowing the US to use bases in their country for the war against Iran. Saudi Arabia, Bahrain, Kuwait, Qatar, UAE, Iraq and Oman are allowing the United States to use bases in their countries for illegal attacks on Iran and thus also violating Art. 2 of the UN Charter. Their actions are comparable to harboring a murderer in your house, and, what's worse, not just after the crime but when s/he is still going out and killing people.
Iran's actions are consistent with its inherent right of self defense under Art. 51 of the UN Charter.
Article 51
Nothing in the present Charter shall impair the inherent right of individual or collective self-defence if an armed attack occurs against a Member of the United Nations, until the Security Council has taken measures necessary to maintain international peace and security. Measures taken by Members in the exercise of this right of self-defence shall be immediately reported to the Security Council and shall not in any way affect the authority and responsibility of the Security Council under the present Charter to take at any time such action as it deems necessary in order to maintain or restore international peace and security.
Mike