    Sentencé 1::'The.two:have no. diplomatic: ties  and their. dlready: tense’ .telationship: -has  been frayed: by. the‘crisis over the North 's  nuclear: ambitions . : :    Sentence 2: The two. have: ho:  and" their ‘already’ :tense.. relationship... has  ‘been’ frayed. further by. 2- diplomatic “spat  over. North Koréa ‘s nuclear ambitions.         