In June 1923, when Prime Minister Aleksandar Stamboliyski was deposed through a coup d'état, Dimitrov and Khristo Kabakchiev, the leading communists in Bulgaria at that time, resolved not to take sides, a decision condemned by Comintern as a "political capitulation" brought on by the party's "dogmatic-doctrinaire approach". After Vasil Kolarov had been sent from Moscow to impose a change in the party line, Dimitrov accepted Comintern's authority, and in September 1923, he and Kolarov led the failed uprising, against the regime of against Aleksandar Tsankov, which cost the lives of possibly five thousand communist supporters during the fighting and the reprisals that followed. Despite its failure, the attempt was approved by Comintern, and secured the positions of Kolarov and Dimitrov - who escaped via Yugoslavia to Vienna - as the joint leaders of the Bulgarian CP. In the aftermath the St Nedelya Church, a terrorist bomb attack carried out by communists, Dimitrov was tried "in absentia" in May 1926 and sentenced to death, although he had not approved the attack, and his only surviving brother, Todor, was arrested and killed by royal police in 1925. Under pseudonyms, he lived in the Soviet Union until 1929, when he was ousted from his leadership role in the Bulgarian communist party by a faction of younger, more left wing activists, and was relocated to Germany, where he was given charge of the Central European section of the Comintern. In 1932, Dimitrov was appointed Secretary General of the World Committee Against War and Fascism, replacing Willi Münzenberg.