By the end of 2011 these incompatible strategies led observers to question the group's cohesion; comparisons were drawn with the divergent motivations of the militant factions of the oil-rich Niger Delta.
These incompatible strategies led observers. This was by the end of 2011. This was to question the group's cohesion. Comparisons were drawn with the divergent motivations of the militant factions of the oil-rich Niger Delta.