Turkey shot down a Russian warplane on Tuesday that it said ignored repeated warnings and crossed into its airspace from Syria, killing at least one of the two pilots in a long-feared escalation in tensions between Russia and NATO. Russian President Vladimir Putin denounced what he called a "stab in the back" and warned of "significant consequences."Suzan Fraser, Nataliya Vasily | AP
Under the proposal, most drone owners would have to register the machines with the federal government, which would place the information in a national database, the first such requirements.Cecilia Kang
The mother's  insistence that something serious was wrong with Bentley was dismissed by doctors who attributed his headaches, lethargy and episodic vomiting to a virus.The Washington Post
Americans should be alert to possible travel risks, especially during the holidays, following increased terrorist threats around the world, the State Department warned on Monday.Associated Press
Impoverished migrant workers in Thailand are sold or lured by false promises and forced to catch and process fish that ends up in global food giant Nestle SA's supply chains.Martha Mendoza
The agreement would be the latest, and largest, aimed at helping a U.S. company lower its taxes by reincorporating overseas, a tactic known as corporate inversion.CHAD BRAY
At least 16 people were injured, 10 of them hospitalized, after a shootout Sunday night in a park here where hundreds of people had gathered for the filming of a music video, the New Orleans Police Department said.Campbell Robertson
After weeks of talks, Pfizer and Allergan have agreed on a blockbuster merger worth $150 billion.Andrea Chang
Belgian Prime Minister Charles Michel said the country's capital, which also houses the headquarters of the European Union and NATO, faced a "serious and imminent" threat of attack.Raf Casert, Elaine Ganley | Associated Press
What police force would start playing along with a practical joke when the capital is facing its highest state of alert and its most-wanted fugitive is still on the run? Right! This is surreal Belgium.Raf Casert | Associated Press