the Soviet Union and MacDonald informed Parliament in February 1924 that negotiations would begin to negotiate a treaty with the Soviet Union. The treaty was to cover Anglo-Soviet trade and the repayment of the British bondholders, who had lent billions to the pre-revolutionary Russian government and been rejected by the Bolsheviks. There were, in fact, two proposed treaties: one would cover commercial matters, and the other would cover a fairly vague future discussion on the problem of the bondholders. If the treaties were signed, the British government would conclude a further treaty and guarantee a loan to the Bolsheviks. The treaties were popular neither with the Conservatives nor with the Liberals, who, in September, criticised the loan so vehemently that negotiation with them seemed impossible. However, the government's fate was determined by the "Campbell Case", the abrogation of prosecuting the left-wing newspaper the Workers' Weekly for inciting servicemen to mutiny. The Conservatives put down a censure motion, to which the Liberals added an amendment. MacDonald's Cabinet resolved to treat both motions as matters of confidence. The Liberal amendment was carried, and the King granted MacDonald a dissolution of Parliament the following day. The issues that dominated the election campaign were the Campbell Case and the Russian treaties, which soon combined into the single issue of the Bolshevik threat. Zinoviev letter On 25 October 1924, just four days before the election, the Daily Mail reported that a letter had come into its possession which purported to be a letter sent from Grigory Zinoviev, the President of the Communist International, to the British representative on the Comintern Executive. The letter was dated 15 September and so before the dissolution of parliament: it stated that it was imperative for the agreed treaties between Britain and the Bolsheviks to be ratified urgently. The letter said that those Labour members who could apply pressure on the government should do so. It went on to say that a resolution of the relationship between the two countries would "assist in the revolutionising of the international and British proletariat ... make it possible for us to extend and develop the ideas of Leninism in England and the Colonies". The government had received the letter before its publication in the newspapers. It had protested to the Bolsheviks' London chargé d'affaires and had already decided to make public the contents of the letter with details of the official protest but