Trump plans foreign policy speech to project 'presidential' image

Republican U.S. presidential candidate Donald Trump reacts during a campaign event in Harrisburg, Pennsylvania, U.S., April 21, 2016. REUTERS/Carlos Barria

HOLLYWOOD, Fla./WASHINGTON (Reuters) - Republican presidential front-runner Donald Trump attacked his top Democratic rival Hillary Clinton on Friday, calling her "crooked," and promised his supporters that he would not bore them by becoming overly presidential.

The comments undercut what his aides had said would be an attempt by the notoriously blunt-speaking Trump to project a more serious image after his win in New York's nominating contest this week, including by rolling out more policy details.