Tags: Europe

Germany, Russia, Ukraine and France have decided not to hold a summit on the conflict in Ukraine on Thursday because of a lack of progress in implementing a four-month-old ceasefire agreement.

U.S. President Barack Obama will invite allies to a Feb. 18 security summit in Washington to try and prevent violent extremism, U.S. Attorney General Eric Holder said on Sunday after meeting his European counterparts in Paris.

A policewoman was killed in a shootout in southern Paris on Thursday, triggering searches in the area as the manhunt widened for two brothers suspected of killing 12 people at a satirical magazine in an apparent Islamist militant strike.