Obama to Prince Harry: Leaders must use care on social media

Britain's Prince Harry, right, interviews former U.S. President Barack Obama as part of his guest editorship of BBC Radio 4's "Today" program. (Kensington Palace courtesy of The Obama Foundation via AP)

LONDON — Former President Barack Obama told Prince Harry in an interview broadcast Wednesday that people in leadership roles must be careful in their use of social media and warned against spending too much time immersed in the internet at the expense of the world outside.