Ubwongereza buragabisha Uburusiya ku bitero vyo kuri internet Ibirwanisho ruhonyanganda vy'Uburusiya biri ku rundi rwego Leta y'Ubwongereza ivuga ko ubumara bwakoreshejwe bwitwa novichok canke "mushasha", bwo mu gihe Uburusiya bwari buriki urunani rw'aba Soviet.
