Complex sentence: He alienated some segments of nationalists and the military, who feared Bangladesh would come to depend upon India and become a satellite state by taking extensive aid from the Indian government and allying Bangladesh with India on many foreign and regional affairs.
Split into simpler sentences: He alienated some segments of nationalists and those in the military who feared Bangladesh would become too dependent upon India. They worried about becoming a satellite state by taking extensive aid from the Indian government and allying with that country on many foreign and regional affairs.