Clinton aide: Sanders needs to change 'tone' if he wants NY debate

The Hill reports:

A top aide to Hillary Clinton's campaign on Monday dodged questions about setting up a debate with Bernie Sanders in New York, saying it depends on the senator's "tone."

"This is a man who said he'd never run a negative ad ever. He's now running them. They're planning to run more," Joel Benenson, Clinton's chief strategist, said on CNN. "Let's see the tone of the campaign he wants to run before we get to any other questions."

Threats.