The State Department has continued to update its travel advisories as the conflict with Iran and adversarial relationships with other nations continue to play out across the world.
Americans traveling abroad could be targets for arbitrary arrests or attacks, the agency has warned.
In its interactive world map, the agency has branded several Middle Eastern countries as unsafe for Americans to travel to. Saudi Arabia, Oman, Kuwait and Bahrain have moved from Level 2 to Level 3 advisories, meaning Americans should exercise caution or reconsider their travels to those locations altogether, the Iranian state television.
Countries with a Level 4 warning ("Do Not Travel") include Afghanistan, Haiti, Iraq, Libya, Russia, Somalia, Sudan, Ukraine and Yemen.
The U.S. may not have a consular presence in those nations, and U.S. citizens there could have difficulty accessing services. Russia, in particular, has been known to wrongfully detain Americans for years.
Countries with a Level 3 advisory — meaning Americans should reconsider travel — include Bahrain, Colombia, Honduras, Israel, Nicaragua, Qatar, Saudi Arabia, the United Arab Emirates and Venezuela.
Countries where Americans should exercise increased caution (Level 2) include Cuba, the Dominican Republic, France, Greenland, Italy, Mexico and the United Kingdom.
Parts of Mexico have been designated as Level 4 zones, including Sinaloa and Colima, while other states like Jalisco and Baja California are designated Level 3 due to cartel activity.
The State Department recommends travelers enroll in its Smart Traveler Enrollment Program, which updates Americans with emails and alerts from U.S. embassies and consulates abroad.