NATO foreign ministers pledged to increase support for Ukraine and help rebuild its energy infrastructure.

"Russia’s aggression, including its persistent and unconscionable attacks on Ukrainian civilian and energy infrastructure is depriving millions of Ukrainians of basic human services." foreign ministers said in a statement after the first day of talks in Bucharest.

"We will continue and further step up political and practical support to Ukraine as it continues to defend its sovereignty and territorial integrity and our shared values against Russian aggression, and will maintain our support for as long as necessary," the statement said.

The foreign minister also reiterated the 2008 NATO summit decision that Ukraine would eventually become a member of the alliance. Since then, however, leaders have not taken any concrete steps, such as providing Kiev with a membership action plan outlining a timetable for the country's rapprochement with NATO.