The newly designated EU foreign affairs chief, Federica Mogherini, says Nato countries bordering on Russia need more than a paper pledge that NATO will help them in a crisis.
Russia's War Against Ukraine
BBC: Mogherini calls for NATO muscle in Eastern Europe
Lithuanian people hold the Lithuanian and the NATO flag during a ceremony to mark the 10th anniversary of Lithuania joining the NATO military alliance, in Vilnius on March 29, 2014.
