 In mid-February 2013, Poroshenko hinted he would run for Mayor of Kiev in the 2013 Kiev mayoral election.In 2013, the registration certificate of Solidarity was cancelled because for more than 10 years had not participated in any election.Poroshenko then launched and became leader of the National Alliance of freedom and Ukrainian patriotism "OFFENSIVE" (NASTUP), which was renamed "All-Ukrainian Union Solidarity" (BOS).