Fr.: 1) ligne d'action; 2) politique
1) A definite course of action adopted for the sake of expediency, facility, etc.
M.E. policie "government, civil administration," from O.Fr. policie "political organization, civil administration," from L.L. politia "the state, civil administration," from Gk. politeia "state, administration, government, citizenship," from polites "citizen," from polis "city, state."
Fr.: responsable politique, décideur
A person responsible for making policy, especially in government (Dictionary.com).