politic

(archaic) Of or relating to polity, or civil government; political.

(archaic, of things) Relating to, or promoting, a policy, especially a national policy; well-devised; adapted to its end, whether right or wrong.

(archaic) Sagacious in promoting a policy; ingenious in devising and advancing a system of management; devoted to a scheme or system rather than to a principle; hence, in a good sense, wise; prudent; sagacious

Shrewd, prudent and expedient.

Discreet and diplomatic.

Artful, crafty or cunning.