Complex sentence: Of the manifesto's principal authors, two were broadly against the war; two were broadly in support, and some of the manifesto's authors have criticised certain anti-war figures and groups, notably George Galloway and the Stop the War Coalition for their alliances with Islamists.
Split into simpler sentences: Of the manifesto's principal authors, two were broadly against the war; two were broadly in support. Some of the manifesto's authors have criticised certain anti-war figures and groups, notably George Galloway and the Stop the War Coalition for their alliances with Islamists.