US Issues ‘Do Not Travel’ Advisory For Over 20 Countries: Check Complete List Post author:mck Post published:January 8, 2026 Post category:Blog Under the US State Department’s four-tier travel advisory system, Level 4 is the most severe classification. You Might Also Like Rescue workers rush to save lives after south Tehran missile strike March 27, 2026 How Israel is trying to hinder NGOs from working in Gaza February 4, 2026 Trump’s ‘reciprocal’ tariffs hit dozens of countries, stock markets plunge April 9, 2025