NATO is preparing for a long standoff with Russia, reluctantly accepting that the Ukraine conflict has fundamentally transformed Europe's security landscape and that it may have to abandon hope of a constructive relationship with Moscow.

• July 6, 2015

Russian President Vladimir Putin must be finding it hard to contain a wry smile as the European Union struggles with Greece's debt problems.

• July 4, 2015

Iran and world powers continued marathon talks on Saturday in an attempt to clinch an historic nuclear accord but remained divided on issues such as lifting U.N. sanctions and development of advanced centrifuges.

• July 4, 2015

A year and half of nuclear talks between Iran and major powers were creeping toward the finish line on Friday as negotiators wrestled with sticking points including questions about Tehran's past atomic research.

• July 3, 2015

The euro zone's rescue fund, Greece's largest creditor, on Friday declared Athens in default on its euro zone loans after missing a payment to the IMF, and reserved the right to call in 130.9 billion euros in debt ahead of schedule.

• July 3, 2015

Russia expressed "deep concern" on Thursday over Ukraine's plans to decentralize power as part of a peace deal with separatist rebels, underlining the gulf between Moscow and Kiev as the conflict rumbles on despite a ceasefire.

• July 2, 2015

Russia sought on Wednesday to ease concern in Lithuania, Latvia and Estonia over plans to review the legality of a 1991 decision formally granting them independence from the Soviet Union.

• July 1, 2015

The global nuclear watchdog said on Wednesday its boss would fly to Tehran to discuss one of the biggest sticking points that need to be resolved so that Iran and world powers can reach a breakthrough final nuclear deal by a new deadline of next week.

• July 1, 2015