Watch: US B52s fly over UK to show solidarity with NATO

American B-52 Stratofortress bombers were flying over all 30 NATO countries on Friday in an exercise the US military said was to demonstrate the alliance's solidarity, amid growing signs of cracks. It comes amid an escalating dispute between NATO nations Greece and Turkey over jurisdiction over waters in the Mediterranean, and strong-arm tactics from US President Donald Trump to press NATO allies to spend more on defence that has left many of them resentful and concerned about America’s commitment.