Complex sentence: Using his expertise in intelligence and special missions, Iwakuro sought to train the Indian forces in such mission, and by some accounts only engaged in as much development of the INA as would keep Mohan Singh happy.
Split into simpler sentences: Using his expertise in intelligence and special missions, Iwakuro sought to train the Indian forces in such mission. By some accounts he only engaged in as much development of the INA as would keep Mohan Singh happy.