In November 2005, following a meeting of Anglicans of the "global south" in Cairo at which Williams had addressed them in conciliatory terms, 12 primates who had been present sent him a letter sharply criticising his leadership which said that "We are troubled by your reluctance to use your moral authority to challenge the Episcopal Church and the Anglican Church of Canada." The letter acknowledged his eloquence but strongly criticised his reluctance to take sides in the communion's theological crisis and urged him to make explicit threats to those more liberal churches. Questions were later asked about the authority and provenance of the letter as two additional signatories' names had been added although they had left the meeting before it was produced. Subsequently, the Church of Nigeria appointed an American cleric to deal with relations between the United States and Nigerian churches outside the normal channels. Williams expressed his reservations about this to the General Synod of the Church of England.