A polar bear keeps close to her young along the Beaufort Sea coast in the Arctic National Wildlife Refuge, Alaska. US president Barack Obama’s proposal would be the largest designation of wilderness since the Wilderness Act in the 1960. Photograph: Susanne Miller/Reuters

A senior White House official has criticised a Republican senator from Alaska and the state’s congressional representatives for their strong disapp(...)

US secretary of state John Kerry leaves the stage after addressing the World Economic Forum in Davos, Switzerland.   Photograph: Ruben Sprich/Reuters

US secretary of state John Kerry has called for an ambitious international plan to combat the underlying causes of terrorism. In a lengthy addr(...)

Us president Barack Obama meets with Israel prime minister Benjamin Netanyahu in the  White House in  2011. Photograph: Doug Mills/The New York Times

US president Barack Obama and secretary of state John Kerry, in an unprecedented snub, have made it clear that they will not meet with Israeli prime(...)

Alberto Nisman was found dead in his apartment late last Sunday, a gunshot wound to his head and a  pistol by his side along with a single shell casing. Photograph: Marcos Brindicci/Reuters

Argentina suspects rogue agents from its own intelligence services were behind the death of a state prosecutor investigating the deadly 1994 bombing o(...)

A Houthi fighter  in Sanaa. Yemen’s  rebels have welcomed proposed concessions but their gunmen still hold positions outside the presidential palace. Photograph: Khaled Abdullah/Reuters

Yemeni president Abd-Rabbu Mansour Hadi resigned yesterday, throwing the country deeper into chaos days after Houthi rebels battled their way into h(...)

Cristina Fernandez de Kirchner, president of Argentina,   said the death of a prosecutor investigating the bombing of a Jewish community centre was not a suicide. Photographer: Diego Giudice/Bloomberg

Argentine president Cristina Fernández de Kirchner said the death of a prosecutor investigating the bombing of a Jewish community centre was not a sui(...)

Emboldened: President Barack Obama after his State of the Union address. Photograph: Jonathan Ernst/Reuters

Republicans have invited Israeli prime minister Benjamin Netanyahu to address Congress about Iran, defying President Barack Obama’s warnings not to i(...)

US president Barack Obama and Israeli prime minister Binyamin Netanyahu after meeting in the Oval Office of the White House, Washington DC, in 2010. File photograph: Ron Sachs/Getty Images

US House of Representatives speaker John Boehner on Wednesday invited Israeli prime minister Binyamin Netanyahu to speak to Congress without consultin(...)

President Barack Obama delivers his State of the Union address, in the House Chamber of the Capitol Building in Washington. Photograph: Doug Mills/The New York Times 2:12

A lighter moment in Barack Obama’s State of the Union address last night came when he said that he had “no more campaigns to run.” The statement drew (...)

US President Barack Obama delivers the State of the Union speech before members of Congress on January 20th, 2015 in Washington, DC. Photograph: Mark Wilson/Getty Images 2:12

President Barack Obama used his sixth annual State of the Union address last night to declare that the United States had turned the page on unpopular (...)