5 Things to Know This Morning

— -- Your look at the five biggest and most buzz-worthy stories of the morning.

1. Obama to Address UN Amid New Mideast Strikes

President Obama will address the United Nations later today after extending military action into Syria earlier this week.

2. Syrian Airstrikes Raise Lone Wolf Terror Threat in US, Feds Warn

American airstrikes in Syria Monday night halted the threat of terrorist attacks in the U.S. homeland from organized groups like ISIS and al Qaeda, but raised the specter of angry lone-wolf sympathizers carrying out an attack on their own, federal authorities said Tuesday.

The American airborne offensive could potentially embolden self-radicalized terrorists to strike inside the homeland, the Department of Homeland Security and FBI say in a joint bulletin issued to local, state and federal law enforcement.

3. Suspect in Missing UVA Student Charged With Abduction

The man who was the last person seen with missing University of Virginia student Hannah Graham was charged Tuesday with abduction with intent to defile.

Jesse Matthew, already sought on an unrelated dangerous driving warrant, has not been seen since he sped away from a Charlottesville police station on Saturday.

4. Tavis Smiley Gets the Boot in Week 2 of 'DWTS'

Talk show host Tavis Smiley was voted off "Dancing With the Stars" Tuesday night. After judges' scores and viewer votes were combined, Smiley and NASCAR legend Michael Waltrip were told they were both in danger of being eliminated.

After he learned his fate, Smiley hugged his pro partner, Sharna Burgess, and said he believed in "the art of dance," and acknowledged that dance needed to have time devoted to it.

5. Colin Farrell and Vince Vaughn To Star In 'True Detective' Season 2

The wait is over: HBO has revealed the two stars of "True Detective" season two.

Colin Farrell and Vince Vaughn have been tapped for eight episodes and are set to begin production later this fall in California, the network confirmed Tuesday.