UK warns against travel to 21 countries over security risks, conflict, or instability.

The UK FCDO has updated travel advice for 21 countries, warning against all or most travel due to security risks, conflict, and instability. Afghanistan, Israel, and Palestine remain off-limits, with a full travel ban in place. Advisories also cover parts of Azerbaijan, Bahrain, Egypt, Iran, Iraq, Jordan, Kuwait, Lebanon, Oman, and areas near the Syria-Jordan border, with shelter-in-place alerts in some regions. Travelers are urged to check the latest guidance before departure, as conditions can change rapidly.