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.