This is the story of how an office supply glitch became a major irritant between the United States and one of its close security partners.
When President Donald Trump added the African nation of Chad last month to his most recent installment of travel restrictions, everyone from the Pentagon to Chad's leaders to the French government was perplexed. The U.S. has praised Chad's cooperation on counterterrorism, especially its campaign against a vicious Boko Haram insurgency spilling over from Nigeria.
As it turns out, a seemingly pedestrian issue was largely to blame: Chad had run out of passport paper.
Chad and every other country had been given 50 days to prove it...