(Reuters) - Germany has tightened security at its airports after U.S. authorities said they were concerned that al Qaeda operatives in Syria and Yemen were developing bombs that could be smuggled onto planes. Germany's interior ministry said in a statement on Tuesday that...

(Reuters) - Supreme Leader Ayatollah Ali Khamenei said Iran would need to significantly increase its uranium enrichment capacity, highlighting a gap in positions between Tehran and world powers as they hold talks aimed at clinching a nuclear accord. Iran and six major powers...

(Reuters) - U.S. Attorney General Eric Holder urged countries in Europe and elsewhere on Tuesday to do more to keep their own citizens from traveling to Syria to fight, saying the world cannot allow Syria to become a training ground for violent extremists. In a speech in...

GAZA/JERUSALEM (Reuters) - Israel launched an offensive against Islamist Hamas in the Gaza Strip on Tuesday, bombing some 50 targets, including homes, in a campaign meant to end Palestinian rocket fire into the Jewish state. The Israeli military urged Israelis within a 40-km...