What countries are not members of icao?

As of now, there are a few countries that are not members of the International Civil Aviation Organization (ICAO). Notably, these include the Vatican City and Taiwan, which is not recognized as a separate state by some countries and thus not a member. Additionally, some small nations or territories may also be non-members, but the list can change over time. Overall, ICAO has 193 member states, with most countries participating in its framework for international aviation.