National security and terrorism have been a top issue for Republicans, but they have gained even more importance after the Paris and San Bernardino, Calif., attacks.
Outlining her plan to combat ISIS and radicalization in the U.S., the Democratic presidential candidate said "shallow slogans don't add up to a strategy."
Marco Rubio and Donald Trump held rallies in Nevada before Tuesday's debate just one mile apart from each other. But Rubio's was traditional and low key; Trump's was the opposite.
The GOP presidential candidate's comments have prompted intense debates in newsrooms. For a glimpse of why, a panel of media leaders, including NPR's news chief, discuss the ethics of covering Trump.
In 2011, Obama joked that Trump, who was hot on the trail of Obama's birth certificate, was a conspiracy theorist waiting to reveal the fake moon landing, and recently that Trump was "Here. Still."
As the front-running GOP presidential candidate's controversial pronouncements multiply, the reporting, commentary and editorials from major news outlets have taken on more urgency.
Trump supporters express deep devotion for their candidate, more than any other Republican running for president — and that could mean big problems for the party next year.