1) Would you please explain the meaning of the underlined passage to me?
"some of our most tenacious black belt quarrellers have come to it (quarrelling) late in life and mastered every throw, from the Crushing Silence to the Gloating Apology, in less than ten years of marriage."
Those who keep silent and apologise are the adversaries of the black belt quarrellers, right? And the good quarrellers are proud and satisfied with this attitude/result = their opponent's defeat ? No. "Black belt quarrellers" are those people who have elevated quarrelling in marriage/a relationship to a fine art [with judo being the source of imagery] and can use a range of techniques to achieve their aims. Their methods can range from silence to a grovelling apology.
2) Does the word throw mean move, coup, manoeuvre here? It comes from judo, where the opposing fighters must use different methods of throwing each other.
3) It seems that there is a difference between a strategy (elaboration, conception of a move?) and a tactic (the move itself?), would please tell me what it is? "strategy" and "tactic" do not appear in the passage you have given. Could you give us the reference?
Thank you very much for your help.
Student or Learner