ὀπίσω τὼ χεῖρε δεῖν
From LSJ
τοῦ δὲ πολέμου οἱ καιροὶ οὐ μενετοί → in war, opportunities won't wait | the chances of war will not wait (Thucydides 1.142.2)
Greek > English (Woodhouse)
bind a person's hands behind his back, bind hands behind one's back
