Sentence:  Israel could offer to ease North Korea's <WSD>isolation</WSD> with diplomatic recognition, ... ¶ ... But Washington's strategy of increasing North Korean <WSD>isolation</WSD> left no room for back-channel talks with Tel Aviv, ... 
Meaning of the word marked with <WSD> tags:  The state of not having diplomatic relations with other countries (either with most or all other countries, or with specified other countries).