The US Department of State said travelers " Be alert to crowded places and frequent places of foreigners" and " Be cautious throughout Nigeria's territory due to the threat of violence blindness can happen ".
A store displays pictures of men killed in suicide bombings.Photo source: Reuters / Akhtar Soomro
Religious conflicts have hindered Pakistan for many years, and violence against certain religious groups is still widespread throughout the country. The Pakistani government also limits many freedom of expression and prohibits foreigners from entering many places throughout the country.
A police officer at the school system at Soyapango in the suburbs of San Salvador in 2015. Photo source: Jose Cabezas / Reuters
In addition to being one of the highest crime rates in the world, El Salvador is also known for many criminal gangs - called maras. These gangs make everything from extortion to smuggling weapons and drug smuggling.
The boy is walking at the damaged house due to the Saudi air raid in Yemen's capital, Sanaa.Photo source: Thomson Reuters
Rebel groups based in Yemen's Sanya capital continue to target US citizens. Extremist groups like Al Qaeda are also active in this country. Many bombings and airstrikes left most of Yemen's population lacking essential necessities such as food, water and medical assistance.
Bogota, Colombia.Photo source: posztos / Shutterstock
Previously, Colombia was not a dangerous country today. The city of Medellín last year was chosen as the best destination in South America voted by the World Tourism Awards. However, foreign tourists traveling to this country still pose a lot of danger of danger.
Bacrim - armed gangs responsible for kidnappings, drug trafficking and looting that take place across Colombia. Besides, terrorist acts and explosions are common in many big cities like Bogota city.
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