International travel usually depends on diplomatic relations and safety agreements between nations. The passport system allows Americans to visit most countries yet there are certain nations which have closed their borders to Americans or they do not have entry procedures to receive American visitors. The standard tourism operations in these areas face restrictions because the area lacks diplomatic ties and people face strict government control and there exist ongoing safety issues for people there.
North Korea

The U.S. Department of State has declared the U.S. passport invalid for North Korean travel since 2017 and Americans face a legal prohibition which prevents them from visiting North Korea for tourist purposes. The United States lacks an embassy there to provide assistance while the local authorities treat foreign visitors differently than most countries do.
Iran

Americans face travel limitations in Iran although the country does not impose an absolute travel ban. U.S. citizens require government-authorized guided tours which they must complete with certified guides who will accompany them throughout their stay. The Iranian Ministry of Foreign Affairs requires travelers to receive pre-approval for their whole travel schedule before they can book hotels and discover Iran.
Syria

Syria has lost all its tourist infrastructure because of the internal fighting which has continued for years and the U.S. government has a “Level 4: Do Not Travel” advisory in place. Americans need to stay away from the area because the Syrian government issues visas while U.S. embassies operate in other countries.
Libya

American citizens cannot obtain standard tourist visas which Libya has established. Most visitors to the country face permission limits which only allow them to travel for business and diplomatic reasons under stringent security measures. The country lacks essential facilities because political instability prevents the establishment of hotels and transportation and safety measures which international tourists require.
Yemen

Western tourists face complete restrictions from entering Yemen. The ongoing instability makes it impossible for the government to provide safe conditions for visitors and the government has closed most border crossings, and there is no trustworthy method for Americans to acquire tourist visas to enter the main part of the country.
Russia

American travelers to Russia face major difficulties because diplomatic tensions have created current travel restrictions. U.S. citizens at the embassy face credit card and banking system issues because most systems there do not support their access. The situation creates a “soft ban” because both the safety risks and the logistical issues prevent regular tourism activities.
Central African Republic

The country remains mostly inaccessible to travelers because its tourism infrastructure has completely disappeared and the country has only two operational main hotels and two professional service providers in its territory. The government operates security services which protect the assets of the country while making it one of the most challenging destinations to reach.
Somalia

Most areas in Somalia remain completely off-limits to American visitors except for the semi-autonomous area of Somaliland. American tourists face airport denial because security issues and the absence of a main tourism office which handles their travel needs lead authorities to keep them away from the country.
Afghanistan

The new government system which emerged in 2021 has created a situation where the American visa system now operates with high levels of unpredictability. American citizens face a de facto travel ban because the U.S. government lacks a diplomatic presence which prevents them from receiving assistance.
