US president Barack Obama extends his hand to Cuban president Raul Castro at the start of their meeting at the UN General Assembly in New York, September 29th, 2015. Photograph: Kevin Lamarque/Reuters

US president Barack Obama has met Cuban president Raul Castro at the United Nations in New York, marking the first meeting between the leaders of the (...)

South Sudan’s President Salva Kiir (right) is congratulated by Kenya’s president Uhuru Kenyatta and Ethiopia’s prime minister Hailemariam Desalegn after signing a peace agreement in South Sudan’s capital, Juba, on Wednesday. Photograph: Jok Solomun/Reuters

South Sudan’s president has signed a peace deal to end a 20-month conflict with rebels, but he told regional African leaders at the ceremony he still(...)

“ ‘We are not seeking a grand bargain’, said John Kerry in Riyadh after his nuclear talks with Iranian ministers in Switzerland.”  Photograph: REUTERS/Brian Snyder

‘We are not seeking a grand bargain”, said United States secretary of state John Kerry in Riyadh after his nuclear talks with Iranian ministers in Swi(...)

Israel’s prime minister Binyamin Netanyahu (C) during his speech to US Congress. Mr Netanyahu used his speech to warn the US government against a nuclear deal with Iran. Photograph: Jonathan Ernst/Reuters

Israeli prime minister Binyamin Netanyahu has warned the US against agreeing to a nuclear deal with Iran and working with a country “deeply rooted in (...)

US National Security Adviser Susan Rice said Binyamin Netanyahu’s visit was “destructive to the fabric” of the US-Israel relationship and endangered the US’s traditional bipartisan support for the Jewish state. Photograph: Getty Images

Prime minister Binyamin Netanyahu hopes his controversial speech later today before the United States Congress, in which he will warn against the emer(...)

Israeli prime minister Binyamin Netanyahu at the  American Israel Public Affairs Committee (AIPAC) policy conference yesterday. Mr Netanyahu is to address  Congress today. Photograph: Getty Images

Israeli prime minister Binyamin Netanyahu will address a joint session of Congress today in one of the most politically divisive speeches by a foreign(...)

Israeli prime minister Benjamin Netanyahu is to address Congress. Photograph: Chris Ratcliffe/Bloomberg

US secretary of state John Kerry has attempted to defuse tension with Israel on the eve of Benjamin Netanyahu’s address to Congress, where he will spe(...)

Israel’s Prime Minister Benjamin Netanyahu pauses while he speaks to supporters of his Likud party as he campaigns in the West Bank Jewish settlement of Maale Adumim, near Jerusale. Mr Netanyahu has rebuffed criticism in Washington of his plans to speak in Congress, accusing world powers of forsaking a pledge to prevent Tehran from acquiring nuclear weapons. Photograph: Nir Elias/Reuters

The row between the White House and Israeli prime minister Binyamin Netanyahu has intensified with US officials saying his outspoken condemnation o(...)

Susan Rice, President Obama’s national security adviser, said the US must “walk and chew gum at the same time” in dealing with immediate crises and long-term threats. Photograph: Alex Wong/Getty Images

President Barack Obama has identified Russian aggression and Islamic extremism as concerns but stresses no single threat or region would dominate A(...)

Outgoing US defence secretary Chuck Hagel: reported to have resigned under pressure from a White House eager to project more assertive responses.  Photograph: Chip Somodevilla/Getty Images

Chuck Hagel, president Barack Obama’s defence secretary, has stood down after less than two years in the job in a sign of increased unease at the W(...)