Officials briefed President Joe Biden for approximately 45 minutes Sunday on the new variant, with a heavy dose of caution about what's still unknown.
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US intelligence community 'struggled' to brief Trump, CIA study says
The US intelligence community "struggled" to brief President-elect Donald Trump in 2016, achieving "only limited success" in educating and developing a relationship with the incoming president, according to a newly released unclassified history of the transition period published by the CIA's in-house academic center.
