WDBJ weatherman Leo (centre) at the makeshift memorial with members of the crew at the studios in Roanoke, Virginia. Photograph: Paul J Richards/AFP/Getty Images

Colleagues of the two American journalists killed live on air on Wednesday held a moment’s silence to remember their co-workers a day after the kil(...)

US Republican presidential candidate Jeb Bush:  used the term  ‘anchor babies’ in an interview on the campaign trail last week.  Photograph: Brian Snyder/Reuters

The term “anchor babies” has become a lightning rod political issue in the stormy tussle between Donald Trump and Jeb Bush, the two leading candidates(...)

Republican presidential candidate Donald Trump’s greets the crowd during a rally in Dubuque, Iowa, this week. Photograph: Reuters/Ben Brewer

Donald Trump, the frontrunner in the polls to become the Republican presidential nominee next year, has courted controversy again on the campaign trai(...)

Donald Trump: asked whether John McCain was owed an apology, Mr Trump told ABC talk show This Week: “No, not at all.” Photograph:  Joshua Lott/New York Times

Republican presidential candidate Donald Trump has stirred controversy again after questioning the war record of Republican senator John McCain, a fo(...)

 President Barack Obama: stressed that there was no alternative to the deal. Photograph: Getty Images

The tough negotiations leading to a nuclear deal with Iran may have concluded in Vienna, but the hard work on selling the agreement to sceptical Repub(...)

President Barack Obama, with Vice President Joe Biden, at a press conference in response to the Iran nuclear deal. Photograph; Andrew Harnik/Getty Images

US president Barack Obama faces stormy weeks ahead as he must convince fellow Democrats and Republicans at home and disgruntled allies in the Middle E(...)

Inspectors concluded the wooden beams supporting the Berkeley balcony became “severely dry-rotted”. Photograph: AP

The parents of a student killed in last month’s balcony collapse in California have told Berkeley city officials that a proposed change in building ru(...)

Governor of Wisconsin Scott Walker, pictured last January, who has joined a crowded field of Republican prospective candidates in the 2016 US presidential election. Photograph: Jim Young/Reuters

Wisconsin governor Scott Walker has become the 15th major Republican to enter the race for the White House, formally announcing his long-anticipated (...)

US secretary of state John Kerry: “If in the end we are able to reach a deal, it has to be one that can withstand the test of time. It is not a test of a matter of days, or weeks, or months. It is a test for decades. That is our goal here.” Photograph: Leonhard Foeger/Reuters

As protracted negotiations to agree an elusive nuclear deal with Iran entered a 13th day, US secretary of state John Kerry said real progress had b(...)

Man  holds a confederate battle flag and Bible outside the statehouse in Columbia, South Carolina, on Thursday, just hours before Gov Nikki Haley signed a Bill to remove the flag from statehouse grounds. Photograph: Jason Miczek/Reuters

The Confederate battle flag, which has reignited a national debate since last month’s killings of nine black churchgoers in South Carolina, is to b(...)