Plans to convert the famous 6th-century building in Istanbul back into a mosque, after being a museum since 1935, have further tested relations with Greece – already damaged by over other regional and international disputes.

The Kremlin has accused Bucharest of subservience, plagiarism and betraying its own interests, after a Romanian defence strategy described Russia as a threat to regional stability.

The Trump administration is pushing for a quick deal between Pristina and Belgrade after the European Union failed to restart the dialogue – but the rift between the US and the EU is bad news for Kosovo itself.While there have rarely been more envoys and special representatives mandated to help …