Barrack Obama during a news conference in Addis Ababa, Ethiopia, today. Photograph: STR/EPA

President Barack Obama has lashed out at Republican presidential candidates for making what he called “ridiculous” claims about his policies and “outr(...)

Donald Trump has infuriated Republicans by criticizing fellow members of the party and made many of them uncomfortable with harsh remarks about illegal immigration and other issues. Photograph: Joshua Lott/The New York Times

US presidential hopeful Donald Trump persisted in his attacks on fellow Republicans on Tuesday, calling US Senator Lindsey Graham an “idiot” and givin(...)

An insult too far

It was only a matter of time before Donald Trump went too far. Throughout his raucous campaign for the Republican presidential nomination, the propert(...)

John McCain: “It’s just totally inappropriate for Mr Trump to say that he doesn’t like to be with people who are captured.” Photograph: Mandel Ngan/AFP/Getty Images

US senator John McCain urged Republican presidential candidate Donald Trump on Monday to apologise to US military families for saying prisoners of war(...)

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(...)

Republican presidential contender and businessman Donald Trump. Photograph: Daniel Acker/Bloomberg

Republican presidential contender Donald Trump attacked Arizona senator John McCain’s war record on Saturday, saying the former prisoner in North Viet(...)

 Donald Trump  announces his candidacy for the US presidency at Trump Tower  in New York City. Mr Trump is the 12th Republican who has announced running for the White House. Photograph: Christopher Gregory/Getty Images

Canadian rock veteran Neil Young has continued a American tradition of recording artists asking Republican candidates to stop playing their music afte(...)

Almost three weeks after President Barack Obama said the US was not losing to Sunni extremists in Iraq his administration is sending a further 450 (...)

Online footage has shown the Chinese building, on the Fiery Cross Reef in the area, what looks like an airstrip and facilities, which the US navy calls the “Great Wall of Sand”. Photograph: United States Navy via the New York Times

China’s island-building efforts in the South China Sea have got its neighbours rattled and ratcheted up tensions in the region, but a top admiral said(...)

The National Security Agency (NSA) headquarters at Fort Meade, Maryland. Key provisions of the US Patriot Act expired early on Monday after the Senate failed to prevent their lapse, plunging US national security efforts into potential disarray as the country faces persistent extremist threats. Photograph: AFP 1:10

The US government’s authority to collect telephone records in bulk under legislation introduced after the September 11th, 2001 attacks lapsed at midni(...)