A massive explosion on Christmas morning in downtown Nashville, Tennessee, left at least three people wounded. Authorities described the explosion as “intentional. Jessi Mitchell has more. Source

Investigators are now combing the crime scene in Nashville, Tennessee, starting with the identification of the R.V. The explosion scattered debris for several blocks setting cars on fire and shattering buildings. Jeff Pegues reports. Source

More than 120,000 people are being treated for coronavirus in the U.S. With the hospitals already overwhelmed, and concerns about the new, far more infectious covid variant now spreading in the United Kingdom, the C.D.C. is cracking down on documentation prior to entering the U.S. Lilia Luciano reports. Source

Here’s a look at the top stories making headlines on the “CBS Evening News with Major Garrett.” Source

Only a handful of parishioners were allowed inside Christmas mass in Los Angeles, where every 10 minutes, someone dies from COVID. Source

The number of people applying to medical schools is up nearly 20% over this time last year. Here’s what could be driving the trend. Source

Congress’ bipartisan coronavirus relief package hangs in the balance as President Trump continues to insist he wants direct stimulus payments increased to $2,000 per person instead of $600l. Democrats support that, but Republicans have shot it down. CBS MoneyWatch reporter Stephen Gandel joins CBSN’s Tom Hanson to talk about the potential consequences for people and business across America. Source

Some question whether the naturally resource-poor Asian nation will be able to wean itself off imported oil and gas. Source

Italy’s ambassador to the United States, Armando Varricchio, sits down with Major Garrett to discuss his country’s relationship with President Trump and the incoming Biden administration on this week’s edition of “The Takeout with Major Garrett.” Source

Police said an RV parked in downtown Nashville played a recording warning a bomb would detonate – and then it exploded. Source