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Displaced Yemenis sit under a makeshift shelter at a camp for internally displaced persons. Photo: STR / AFP / Getty Images

Warfare, severe food shortages and disease are devastating Yemen, already one of the world's poorest countries. The U.N. has called the situation the "largest humanitarian crisis in the world," and U.N. Ambassador Nikki Haley said recently that "no one should ever have to live the way the people of Yemen are living."

Why it matters: The U.N. estimates that more than 22 million Yemenis are in need of humanitarian assistance. The population of Yemen is 27 million.

By the numbers
How we got here
  • Yemen is nearing its third year of war between two factions: Houthi rebel forces and a Saudi-led coalition which supports President Abdrabbuh Mansour Hadi.
  • Former president Ali Abdullah Saleh, who was killed last year, relinquished his office to Hadi in 2011. Houthi rebels eventually "took advantage of the new president's weakness," after Hadi struggled with several problems in office.
  • Hadi fled the country in 2015, leading the Saudis and other Sunni Arab nations to begin "an air campaign aimed at restoring Mr. Hadi's government."

Go deeper

Ben Geman, author of Generate
8 mins ago - World

John Kerry and China's long road ahead on climate

Photo illustration: Aïda Amer/Axios. Photo: Brian Snyder/AFP via Getty Images

Yes, special climate envoy John Kerry's really in China and no, don't look for a huge breakthrough between the world's two largest carbon-emitting nations.

Driving the news: The State Department yesterday announced Kerry's visit this week, confirming plans that began emerging Saturday.

28 mins ago - Podcasts

Coinbase president Emilie Choi on mainstreaming crypto

Coinbase plans to go public on Wednesday, in a watershed moment for the cryptocurrency industry.

Axios Re:Cap speaks with Coinbase president and COO Emilie Choi about how she thinks about crypto, why Coinbase eschewed a traditional IPO and if we’re ever going to use bitcoin to buy a cup of coffee.

Hundreds of corporations sign statement opposing restrictive voting bills

Former American Express CEO Kenneth Chenault. Photo: Earl Gibson III/WireImage)

Hundreds of companies and executives released a letter on Wednesday condemning legislation that restricts "any eligible voter from having an equal and fair opportunity to cast a ballot," per the New York Times.

Why it matters: It's the most concerted action yet by big business in opposition to GOP-sponsored bills at the state level that limit mail-in ballots, implement new voter ID requirements and slash registration options, among other measures.