The second `` Big Dance '' festival Social_event took place Process_start from 5–13 July 2008 , following the second Mayoral election Change_of_leadership in May 2008 , when Boris Johnson was elected Change_of_leadership as the next Mayor of London .

Emperor Boris II was captured Conquering and taken Bringing to Constantinople where he abdicated Change_of_leadership and the Byzantine Emperor John I Tzimiskes announced Expressing_publicly the annexation Change_of_leadership of Bulgaria , even though the Eastern Roman Empire only controlled Control Eastern Bulgaria at the time , but the lands to the west remained under Bulgarian control Control .

The assassination Killing of Boris Nemtsov , a Russian politician opposed Agree_or_refuse_to_act to the government of Vladimir Putin , happened Presence in central Moscow on Bolshoy Moskvoretsky Bridge at 23:31 local time on 27 February 2015 .

An unknown assailant fired Use_firearm seven or eight shots from a Makarov pistol ; four of them hit Bodily_harm Boris Nemtsov in the head , heart , liver and stomach , killing Killing him almost instantly .

Umpired by the Boat Race veteran Boris Rankov , the 2003 race Competition was the first to be scheduled Process_start on a Sunday .

In a formal handover ceremony Social_event , the Paralympic flag was passed Giving from Boris Johnson , Mayor of London , to Eduardo Paes , Mayor of Rio de Janeiro , the host city of the 2016 Summer Paralympics .