A coalition must be based on ideology, not political opportunities.
What is a coalition style of politics? Dr Eric Williams's statement was convenient for the politics of the time.
The efforts were designed to to engage the various ethnic votes and his interest were solely positioned to seek a more mixed-race base for the People's National Movement (PNM) party at that time.
He and the party had already had the negro base engaged, he needed and recruited the East Indian, (Kamalauddin Mohammed) comes to mind, and of course the light-skinned Portuguese mulatto, like Chambers, Montano and others too numerous to mention.
Coalitions are always fragile, just look at our past local history. During the 18-18 results period that was a coalition of convenience, nothing more, nothing less.