Bill and Melinda Gates released their 2019 annual letter on Tuesday morning.
The couple warned about the rising trend of nationalism in wealthy countries, saying that "turning inward" could dissuade rich nations (like the US) from investing in global health.
"There is nothing about putting your country first that requires turning your back on the rest of the world," Melinda Gates said in the letter. "If anything, the opposite is true."
Bill and Melinda Gates released their annual letter on...
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