The Foreign, Commonwealth & Development Office (FCDO) has released a travel warning for 15 countries ahead of the May half-term holiday, advising British tourists to avoid these destinations due to significant security risks. The list includes Iran, Israel, Syria, and Haiti, among others. Notably, the FCDO has also cautioned against all but essential travel to the United Arab Emirates, citing regional escalations that pose security threats. Travelers are particularly warned about areas in Tunisia near the borders with Libya and Algeria, where cross-border terrorist activities have been reported. The FCDO emphasizes the importance of checking for updates before and during travel, as situations can change rapidly. Travelers should be aware that visiting these countries may invalidate standard travel insurance and limit access to consular assistance in emergencies.