Hillary Clinton Begins Book Tour

WASHINGTON (AP) — Hillary Rodham Clinton is embarking on a book tour this week that will feature overtones of a potential presidential campaign in 2016. The tour could offer a window into the former secretary of state's stamina and how she might present her rationale for another White House bid.

Clinton's memoir, "Hard Choices," will be released on Tuesday, accompanied by interviews with ABC News and other news organizations. Clinton will appear at book events this week in New York, Chicago, Philadelphia and suburban Washington, D.C.

The former first lady remains the leading Democratic contender for the White House if she chooses to run for president again.

Republicans have aggressively challenged her record at the State Department in anticipation of another campaign.