Yemen 

Wiki Travel Warning : You should not travel to Yemen under any circumstances. The country is embroiled in civil war and the situation on the ground continues to deteriorate. Terrorist groups continue to plot and conduct attacks in Yemen and may attack with little or no warning, targeting tourist locations, transportation hubs, markets/shopping malls, and local government facilities. No part of Yemen is safe from violence. A nationwide cessation of hostilities deteriorated after August 2016, and since then high levels of violence, to include armed conflict, artillery shelling, and air strikes, now persist in areas throughout the country. Attempts at independent travel are near suicidal and will most likely result in your death