Britain's departure from the European Union risks undermining Europe's new defense strategy, days before NATO and EU governments sign a landmark pact to confront a range of threats from Russia to the Mediterranean, officials say.

• June 27, 2016

Russia is likely to deploy advanced nuclear-capable missiles in its European exclave of Kaliningrad by 2019, casting the move as a reply to a U.S.-backed missile shield, and may one day put them in Crimea too, sources close to its military predict.

• June 23, 2016

The Organization for Security and Co-operation in Europe, monitoring a fragile ceasefire in eastern Ukraine, has called on Ukraine and Russian-backed separatists to do more to investigate violations of the agreement.

• June 22, 2016

Russia must boost its combat readiness in response to NATO's "aggressive actions" near Russia's borders, President Vladimir Putin said on Wednesday.

• June 22, 2016

The Islamic State group launched a counter attack against fighters trying to capture the Syrian city of Manbij on Monday, inflicting heavy casualties on the U.S.-backed forces, the Syrian Observatory for Human Rights and the militants said.

• June 20, 2016

The European Union should keep in place the sanctions imposed on Russia over the Ukraine crisis, NATO Secretary General Jens Stoltenberg told Reuters on Monday, a day after the German foreign minister said they should gradually be phased out.

• June 20, 2016

The Pentagon said on Saturday it has questioned Moscow over air strikes against U.S.-backed Syrian opposition forces earlier this week, saying Russian forces failed to heed U.S. warnings to stop the attack.

• June 18, 2016

German Foreign Minister Frank-Walter Steinmeier has criticized NATO's decision to stage military maneuvers in eastern Europe, warning such moves could worsen tensions with Russia.

• June 18, 2016