good policy; wise policy; best plan
この状況では撤退するのが得策だ。
Withdrawing is the wisest move in this situation.
今は無理に動かず様子を見るのが得策だろう。
Watching and waiting without forcing a move is probably the best policy now.
長期的な視点から投資するのが得策と判断して決断した。
Judging that investing from a long-term perspective was the wisest course, he made his decision.