Complex sentence: President Hadi's term was extended for another year in order to appoint and monitor two committees: one to choose between two federal regions (North and South) or six, and the other one to draft a new constitution.
Split into simpler sentences: President Hadi's term was extended for another year in order to appoint and monitor two committees. One to choose between two federal regions (North and South) or six; and the other one to draft a new constitution.