Today's edition of quick hits:
* Lebanon: "A suicide bomber blew himself up early Tuesday in a neighborhood in south Beirut where the Shiite militia and political party Hezbollah holds sway, the most recent in a series of such attacks that have targeted civilian areas across Lebanon in recent months."
* Gun violence: "A man was killed Tuesday and a suspect was in custody after a shooting on the campus of Purdue University in Indiana, police and campus authorities said."
* Pakistan: "Jets bombed Pakistan's restive North Waziristan tribal region for the first time in years on Tuesday after a wave of suicide bomb attacks targeted security forces."
* Putin has deployed a security force of 60,000: "Russian President Vladimir Putin has taken a high-stakes risk with the Winter Games in Sochi, guaranteeing they will be safe despite their setting on territory awash in grievance and terror. Olympic officials have accepted his assurances, but as the Opening Ceremony nears, so do the jitters."
* How can the story in West Virginia get worse? This is how: "Federal and state investigators learned Tuesday that an additional chemical that wasn't previously identified was in the tank that leaked on Jan. 9 at the Freedom Industries tank farm just upstream from West Virginia American Water's regional drinking water intake."
* Nebraska: "Omaha authorities confirm two people died and 10 others were seriously hurt in an explosion and partial building collapse at an animal feed processing plant Monday morning."
* Four same-sex married couples and the ACLU of Utah are suing the state "to compel recognition of their marriages, performed in the brief window of time that such unions were legal in the state. The lawsuit argues that when those couples were married, they were vested with rights protected by the due process clauses of both the state and U.S. constitutions."
* Uncovering the truth behind some of the church's sexual-abuse scandals: "Thousands of documents detailing the Archdiocese of Chicago's often halting response to sexual abuse allegations against 30 priests were posted online Tuesday after eight years of negotiations between victim advocates and Roman Catholic Church officials."
* Quite a shake-up: "Ezra Klein, an analyst, columnist and pundit who runs The Washington Post's Wonkblog, will leave the newspaper, taking two of his colleagues with him, according to an internal memo sent on Tuesday."
* Was it fun to watch First Lady Michelle Obama dunk on a toy hoop with Lebron James? Actually, yes, it was.
Anything to add? Consider this an open thread.