When President Donald Trump announced his new and expanded travel ban this week, the list of countries facing restrictions exhibited few obvious through lines. A closer look, though, reveals that many of the countries are united by a harsh recent history of civil war or armed conflict.

President Trump signed a proclamation to ban travel from certain countries, citing national security risks. It's set to take effect at 12:01 a.m. Monday.

The new travel ban on citizens of 12 countries that restricted access to people from seven others includes some exceptions.