23 Countries the U.S. Warns Americans Against Visiting Now: The Full Story

6. Iran: Extreme Detention Risk & Hostility

Iran is under a "Do Not Travel" advisory due to the severe risk of wrongful detention and kidnapping of U.S. citizens, particularly dual nationals. The Iranian government continues to arbitrarily detain foreigners on vague charges, using them as political leverage. Consular access for detained U.S. citizens is often denied. The full story is the acute danger posed by a hostile regime that views American travelers with deep suspicion, making any visit an unacceptable gamble with personal liberty.