(Reuters) - U.S. Defense Secretary Chuck Hagel resigned on Monday, leaving under pressure as President Barack Obama faces critical national security challenges, including fighting Islamic State in Iraq and Syria and revising plans to exit Afghanistan . It was the first...

(Reuters) - U.S. Defense Secretary Chuck Hagel has resigned, the first major cabinet change after Obama's Democrats were routed in mid-term elections three weeks ago. Obama was to announce Hagel's resignation at a White House event at 11:10 a.m. on Monday. Hagel, who had...

(Reuters) - Tunisians went to the polls on Sunday to vote for their first directly elected president, in the final step to be taken to full democracy after the 2011 revolution that ended the rule of Zine el-Abidine Ben Ali. More than three years since overturning Ben Ali's...

(Reuters) - Despite nearly a year of negotiations, Iran and six major powers are unlikely to meet a Nov. 24 deadline to reach a final deal to lift international sanctions on Tehran in exchange for curbs on its nuclear program, officials say. Western and Iranian officials...