During the Second World War he became one of the most prominent leaders of the legal opposition within parliament. However, on 2 September 1944 Muraviev was chosen by the Regency as Prime Minister in order to appeal to the Western
Allies after they had rejected the advances of his predecessor
Ivan Bagryanov. Muraviev ratified the abolition of all laws against
Jews on 5 September. The cabinet included no members of either the
Fatherland Front or the left wing of the Agrarian Party, making it wholly unacceptable to Moscow. Muraviev had made overtures to the Fatherland Front although he was rebuffed as by this point they felt ready to establish their own government, rather than act as junior partners. His refusal to declare war on Germany further alienated him from the Soviets, although for his part Muraviev feared that a declaration of war would offer the USSR the pretext for an occupation of Bulgaria, ostensibly as the defence of an ally. Faced with a series of strikes he broke relations with Germany on 5 September but, on the advice of his War Minister General
Ivan Marinov, did not declare war in order to allow Bulgarian troops to evacuate
Yugoslavia first. The scheme failed however as the Soviet Union promptly declared war on Bulgaria and, by the time Muraviev did likewise against Germany on 8 September it was too late. Although he had made overtures to the Allies throughout his brief Premiership the Soviet Union had refused to negotiate with him and his efforts had failed. Muraviev's efforts had also been damaged by the fact that General Marinov had secretly been in contact with the Fatherland Front throughout and had been largely acting on their behalf. ==Post-war==