The flood of articles is about speculation, there are a number of possibilities.
Russia instantly issued its claim and you instantly took it to heart.
Occam’s razor. Was it Putin killing his friend’s daughter in some Byzantine plot? Or Ukes killing someone they clearly want dead and celebrate it?
But you go with the British newspapers parroting MI6 and MI5.
Doesn’t affect me either way except to be bummed that conservatives like you are so easily manipulated by our intel people and MSM.