 Complete the following phrase:  Lenin rejected repeated calls, including from some Bolsheviks, to establish a coalition government with other socialist parties. Although refusing a coalition with the Mensheviks or Socialist-Revolutionaries, Sovnarkom partially relented; they allowed the Left Socialist-Revolutionaries five posts in the cabinet in December 1917. This coalition only lasted four months until March 1918, when the Left Socialist-Revolutionaries pulled out of the government over a disagreement about the Bolsheviks approach to ending the First World War. At their 