Senator Bernie Sanders and former secretary of state Hillary Clinton at the Democratic presidential candidate debate at the University of New Hampshire in Durham  on Thursday. Photograph: Andrew Harrer/Bloomberg.

Democratic candidates Hillary Clinton and Bernie Sanders clashed in their sharpest exchanges during a presidential debate as the former secretary of s(...)

Democratic frontunner Hillary Clinton’s voting precinct leaders check final counts before her victory  by five delegates to Bernie Sanders’s four, in Simpson Barn, Johnston, a suburb of Des Moines, Iowa. Photograph: Simon Carswell

“Come on over here, I’ll give you some ice cream,” says a Martin O’Malley supporter, trying to encourage a Bernie Sanders man to defect to the long-sh(...)

Senator Ted Cruz, a Republican from Texas and 2016 presidential candidate, greets supporters after being declared the winner of the Iowa caucus during his campaign’s caucus night celebration at the Elwell Center on the Iowa State Fairgrounds in Des Moines, Iowa, US, on Monday, February 1st, 2016.  Photograph: Luke Sharrett/Bloomberg

Billionaire Donald Trump was dealt a blow in his bid to become Republican presidential nominee, losing to Texas senator Ted Cruz in the Iowa caucuses,(...)

 Democratic presidential candidate Martin O’Malley greets potential supporters on Sunday  in Johnston, Iowa. Photograph:  Steve Pope/Getty Images

Presidential hopeful Martin O’Malley, polling a distant third behind Hillary Clinton and Bernie Sanders, urged supporters to “hold strong,” still seei(...)

Hillary Clinton and Donald Trump hold narrow leads in the polls but voting in Iowa can be hard to predict. Photographs: Getty and Reuters

Hillary Clinton and Donald Trump hold narrow leads in the final “gold standard” poll in Iowa, a day before the state holds its caucuses, the official (...)

Cover story: Donald Trump, the Republican presidential hopeful, at a campaign event at the University of Iowa. Photograph: Eric Thayer/New York Times

Bernie Sanders’s coffee jar runneth over. Such is the support here in Iowa City for the socialist senator’s come-from-behind bid to run for the US pre(...)

Presidential candidate Donald Trump claims Megyn Kelly unfairly questioned him in the first Republican debate. Photograph: Reuters

Businessman Donald Trump’s row with Fox News that boiled over this week leading to his decision to skip the television network’s debate last night has(...)

An Armenian Orthodox woman prays at the Syrian Saint Sarkis Church during Christmas celebrations on January 6, 2016 in Damascus. AFP PHOTO / LOUAI BESHARA

Genocide is a specific legal term. If something is classified as genocide, it imposes a responsibility to act on both individual states and the intern(...)

Democratic presidential candidates Hillary Clinton and Bernie Sanders participate in the NBC News -YouTube Democratic Candidates Debate. Photograph: AFP

Leading Democratic candidates Hillary Clinton and Bernie Sanders clashed over guns, healthcare and money in the final debate before the first voters s(...)

US Democratic presidential candidate Hillary Clinton hugs supporters after her introduction at a ‘town hall meeting’ at the Orpheum Theatre in Sioux City, Iowa. Photograph: Jim Young/Reuters

Hillary Clinton’s campaign workers at the Orpheum Theatre busily sign up supporters to commit their vote to the Democrat in the first nominating conte(...)