Coronavirus crisis: speeding up vaccine rollout as virus mutates.

Dr. Fauci warns new COVID-19 variants could cause a surge in cases, ABC's Dr. John Brownstein discusses whether people should start double masking, plus, more on the vaccine shortage in U.S. cities.

Watch video on channel "ABC News"
Trial for officer accused of killing George Floyd set to begin.

Trial for officer accused of killing George Floyd set to begin.

Jury selection begins tomorrow in the trial of Derek Chauvin, the former Minneapolis police officer accused of killing George Floyd.

Pope Francis' historic trip continues into northern Iraq.

Pope Francis' historic trip continues into northern Iraq.

The pontiff called for unity and forgiveness for Muslim extremists as he visited multiple churches destroyed by ISIS.

$1.9 trillion COVID-19 relief package heads back to House

$1.9 trillion COVID-19 relief package heads back to House

The package could be ready for President Joe Biden’s signature as early as this week.

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'Saudi is from my perspective... a strategic partner in the region': Lloyd Austin - ABC News

'Saudi is from my perspective... a strategic partner in the region': Lloyd Austin - ABC News

Martha Raddatz interviews Defense Secretary Lloyd Austin on "This Week." SUBSCRIBE to ABC NEWS: Watch More on LIKE ABC News on FACEBOOK FOLLOW ABC News on TWITTER: #ABCNews #ThisWeek #DefenseSecretary #LloydAustin

'We've got to continue to' wear masks to fight pandemic: Gov.

'We've got to continue to' wear masks to fight pandemic: Gov.

Martha Raddatz interviews Ohio Gov. Mike DeWine on "This Week." SUBSCRIBE to ABC NEWS: Watch More on LIKE ABC News on FACEBOOK FOLLOW ABC News on TWITTER: #ABCNews #ThisWeek #MikeDeWine #Mask #COVID19 #Pandemic