Bulgarian Prime Minister Boyko Borissov is not sure Moscow was indeed behind Salisbury attack, and he ensured  that he his articulate with the other EU leaders. LIVE European Council – Borissov, Bulgaria PM (main feed) https://t.co/x0wfL0nHIo via @EC_AVService — Anna van Densky (@AnnaVanDensky) March 23, 2018 “This is because we all trust the position of…