A Yemeni fighter of the separatist Southern Movement, loyal to the government forces, in Aden’s northern district of Dar Saad on Tuesday. Photograph: AFP/Getty Images

The United States is accelerating arms supplies and bolstering intelligence sharing with a Saudi-led alliance bombing a militia aligned with Iran in n(...)

Russian president Vladimir Putin has said he ordered officials to start work on taking control of Crimea weeks before a referendum which – the Kremlin has asserted until now – prompted the region’s annexation from Ukraine. Photograph: EPA

Russian president Vladimir Putin has said he ordered officials to start work on taking control of Crimea weeks before a referendum which – the Kremli(...)

Residents stand near a smouldering remains of a bus targeted in a suicide attack in the northeast Nigerian town of Potiskum, on February 24th, 2015. Photograph: AMINU ABUBAKAR/AFP/Getty Images

Suicide bombers struck two bus stations in different parts of northern Nigeria on Tuesday, killing at least 26 people in attacks president Goodluck Jo(...)

Tunisian president Mohamed Moncef Mouzouki casts his ballot paper before the media  at a polling station in Sousse, on Sunday as the country votes in a presidential run-off election. Photograph: EPA

Tunisians voted on Sunday in a presidential run-off election that completes the country’s transition to full democracy nearly four years after an upri(...)

Smoke rises near the traffic control tower of the Sergey Prokofiev International Airport damaged by shelling during fighting between pro-Russian separatists and Ukrainian forces, in Donetsk, eastern Ukraine, today. Maxim Zmeyev/Reuters

Nato has said it saw columns of Russian troops and military equipment entering Ukraine this week, supporting allegations by Kiev that the nation’s eas(...)

Rachel Daniel (35) holds up a picture of her abducted daughter Rose Daniel (17) as her son Bukar (7) sits beside her at her home in Maiduguri. Nigeria’s government has reached a deal with Islamic militant group Boko Haram for a cease-fire and the release of around 200 girls kidnapped six months ago from a school in the northeast town of Chibok.  Photograph: Joe Penney/Reuters

Nigeria has said it has agreed a truce with Islamist militants Boko Haram and reached a deal for the release of more than 200 schoolgirls kidnapped by(...)

Still images of  men, who have identified themselves as Russian servicemen,  in a video released by the Ukrainian Security Service today. Photograph: Reuters/Ukrainian Security Service 0:41

Ukrainian military spokesman Andriy Lysenko said today Russian Mi-24 helicopters had attacked a border post in Luhansk region the previous day, killi(...)

An Afghan National Army (ANA) soldier keeps watch at the gate of a British-run military training academy Camp Qargha, in Kabul today. Photograph: Omar Sobhani/Reuters.

An attacker in an Afghan army uniform killed at least three service members from the Nato-led coalition and wounded a senior Afghan commander today in(...)

German government spokesman Steffen Seibert  made clear that Berlin did not view the spying episode as closed with yesterday’s departure. Photograph:  Adam Berry/Getty Images

The CIA chief of station in Berlin, the head intelligence officer in the US embassy, has left the country a week after being ordered to do so by the G(...)

Security officers  outside the US embassy in Berlin.  A spokesman for Chancellor Angela Merkel  said she was still waiting for the CIA station chief in the  embassy to comply with her demand and leave Germany. Photograph: Reuters

German chancellor Angela Merkel and US president Barack Obama remain at odds over double agents discovered working for US intelligence inside the Ger(...)