bbc news with back then. thank you. the head of the national air traffic services has told the bbc the flight chaos caused by a glitch shouldn t happen again. they called it ning radically rare system failure and many brits are still stuck abroad because of the disruption. ukraine says it is suffered the biggest missile attack on the capital in months. russia says it has come under a wave of drone a fax from ukraine. at least two military cargo planes have been damaged. police have launched on a murder investigation following the death of a 56 year old man in county londonderry. 33 year old man has been arrested on suspicion of murder and remains in custody. and the foreign secretary has begun talks in beijing. he is making the first visit to china by a senior uk government official in more than five years and says it is vital to to come continue communication with the country.