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SARS-CoV-2 has been evolving the ability to evade the immune system about twice as fast as the fastest-evolving flu virus. It averages more than a dozen significant changes every year.

Flawed deportation 'checklist' targets Venezuelans using tattoos as one gang identifier. But experts say Tren de Aragua doesn't use tattoos for member identification.

Stephen Capus, who leads Radio Free Europe/Radio Liberty, discusses why his organization is filing a lawsuit against the Trump administration.

Ukraine said it would reciprocate any genuine ceasefire by Moscow, but voiced skepticism after Russian President Vladimir Putin announced a temporary Easter truce in Ukraine starting Saturday.

Secretary of Defense Pete Hegseth and Gen. Dan Caine, chairman of the Joint Chiefs of Staff, gave new details Sunday morning about the U.S. attack on Iran's nuclear sites.