Russia flew aircraft into Ukraine 'seven times' last night

Ukraine's prime minister Arseniy Yatsenyuk has said Russian military aircraft flew into his country's airpsace seven times overnight, echoing earlier claims from the Pentagon.

Read: Russia 'has entered Ukrainian airspace in past 24 hours'

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Cameron offers more Typhoons for Nato air mission

Britain will offer another two Typhoon warplanes to patrol the skies of eastern Europe amid continuing tensions with Russia over the Ukraine cris, David Cameron has said.