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KNOW IT ALL: Thursday's Top 7 Stories at NBC News

From the mass shooting in San Bernardino, California, to Oscar Pistorious being convicted of murder, here are the stories we're following.

Good morning. Here are some of the stories we're following today:

1. Suspects in San Bernardino Shooting Were Couple With Baby

U.S.-born Syed Rizwan Farook, 28, and wife Tashfeen Malik, 27, were identified as the couple who allegedly killed 14 people during a Christmas party at a state-run center for people with developmental disabilities in San Bernardino, California. Farook was an employee with the county health department and was at the party, but left early and later returned. A motive in the rampage — the deadliest since the Newtown, Connecticut, shooting in 2012 — has not been determined, officials said. Read more in NEWS.

2. Two of the Guns Used in Rampage Were Bought Legally: Sources

The suspects were armed with four guns, an explosive device and several magazines of ammunition in a "well-planned" attack, officials said. Two of the four weapons were found to be legally purchased, sources familiar with the investigation told NBC News. Read more in NEWS.

3. Survivors Recount Horror: ‘They Just Started Shooting’

The shooters who opened fire didn't say anything before they started spraying a conference room with bullets, according to the husband of a woman who was injured in the rampage. Read more in NEWS.

4. Oscar Pistorious Convicted of Murder by Appeals Court

The 29-year-old double-amputee Olympian was convicted of murder by a South African appeals court Thursday, a reversal of the result of his original trial that could see him jailed for at least 15 years. Read more in NEWS.

5. British Lawmakers Vote to Join Strikes on ISIS

The House of Commons voted by a wide margin Wednesday to join the international campaign of airstrikes against ISIS in Syria, after Prime Minister David Cameron asserted that bombing the "medieval monsters" in their heartland would make Britain safer. Read more in NEWS.

6. Texas Sues Feds to Block Resettlement of Syrians

The lawsuit filed by the state Wednesday comes after the nonprofit International Rescue Committee defied orders from Gov. Greg Abbott to halt the arrival of six Syrian refugees in Dallas following the November attacks in Paris. Read more in NEWS.

7. 9/11 First Responders to McConnell: Stop Blocking Bill

Frustrated first responders to the Sept. 11 terror attacks who have long-sought reauthorization of a program aimed at helping provide them with health care camped outside of Senate Majority Leader Mitch McConnell's office Wednesday to demand a vote on the measure. Read more in POLITICS.

… What’s trending today?

Get ready to ease on down the road with NBC's "The Wiz Live!" which airs at 8 p.m. ET. The musical is a retelling of the beloved classic "The Wizard of Oz."