Trump on top
A picture of Donald Trump hangs outside a house in West Des Moines, Iowa, January 15, 2016. REUTERS/Jim Youmore
Donald Trump stands between rivals Marco Rubio (L) and Ted Cruz (R) before the start of the Fox Business Netwomore
Audience member Robin Roy reacts as Donald Trump greets her at a campaign rally in Lowell, Massachusetts Januamore
Donald Trump jokes with host Joe Scarborough after an appearance on MSNBC's Morning Joe cable television show more
Protesters hold up a sign towards the crowd at a rally for Donald Trump at Oral Roberts University in Tulsa, Omore
Donald Trump speaks at a campaign rally in Nashua, New Hampshire, December 28, 2015. REUTERS/Brian Snyder
Donald Trump hugs a U.S. flag as he takes the stage for a campaign town hall meeting in Derry, New Hampshire, more
Donald Trump addresses a Trump for President campaign rally in Macon, Georgia, November 30, 2015. REUTERS/Chrimore
Donald Trump addresses the crowd at an event organised by the Greater Charleston Business Alliance and the Soumore
Donald Trump gestures as he speaks at a rally in Las Vegas, October 8, 2015. REUTERS/David Becker
Donald Trump supporters await his arrival at a rally in Sarasota, Florida, November 28, 2015. REUTERS/Scott Aumore
Donald Trump checks his notes before speaking at one of the New England Council's "Politics and Eggs' breakfasmore
A Trump supporter blocks her ear as she stands surrounded by Trump protesters outside the Luxe Hotel, as Donalmore
Donald Trump waits to be introduced during a campaign event at Iowa Central Community College in Ft. Dodge, Iomore
A supporter of Donald Trump attends a campaign event in Springfield, Illinois, November 9, 2015. REUTERS/Jimmore
Supporters of Donald Trump attend a campaign event in Waterloo, Iowa, October 7, 2015. REUTERS/Jim Young
Donald Trump autographs the chest of a woman at his campaign rally in Manassas, Virginia, December 2, 2015. more
Donald Trump speaks in New York, September 3, 2015. REUTERS/Lucas Jackson
A supporter of Donald Trump holds a pumpkin painted in the likeness of Trump as he waits to get into a campaigmore
Supporters of Donald Trump pose for pictures with their posters outside the venue of a Trump for President cammore
Donald Trump gestures and declares "You're fired!" at a rally in Manchester, New Hampshire, June 17, 2015. REUmore
Supporters of Donald Trump react as a protestor interrupts a campaign rally in Worcester, Massachusetts, Novemmore
Donald Trump gestures as if he is sleeping while talking about his opponent Jeb Bush during a Trump for Presidmore
On the battlefield with the U.S.-backed Syrian rebel alliance.
The candidates cast a long shadow on the campaign trail.
Youths, who have been receiving martial arts training decided to form a team to hold regular shows in the hope that the publicity generated will get them...
The mosquito-borne Zika virus has been linked to brain damage in thousands of babies in Brazil.