power-sharing
noun [ U ]
ukus POLITICS, GOVERNMENT
an arrangement in which two people, organizations, political parties, etc. share responsibility for doing something, especially being in charge of a government:
The two leaders presented this new era of power-sharing as a positive thing.
power-sharing agreement/arrangement/deal The parties held a joint news conference to announce their power-sharing agreement.
power-sharing administration/executive/government
power-sharing negotiations/talks