Former President Barack Obama: 'Think before you tweet'

NEW DELHI (AP) — When former President Barack Obama spoke to a leadership forum in India's capital on Friday, he never once used the words "Donald Trump" and was careful to avoid any direct reference to his successor in the White House.Yet Obama made plenty of veiled references, from climate change to the perils of using Twitter. The responses often drew laughter from the audience at the Hindustan Times Leadership Summit, which was part of a three-country tour Obama is undertaking in one o