21.   The development was likely to heighten tension between Greece and Turkey, two NATO allies whose relations have for long been marred by friction.

22.   What relation has the first paragraph to the last?

23.   While ties have thawed, the bombing remains a sensitive topic and relations have yet to recover fully.

24.   But Sino-US relations have themselves worsened considerably in recent months, amid rising concerns about stepped-up Chinese military maneuvers in the region.

25.   To reporters, Rodionov said NATO-Russia relations had to be worked out first.

26.   Officials from both countries agree that their economic relations have yet to realise their full potential.

27.   Relations have yet to be normalised between the two countries, but the number of official contacts has increased recent months.

28.   Relations have since eased back to normal but Manila and Singapore have yet to exchange new ambassadors after pulling back their envoys last year.

29.   The administration had close relations with the governments of prime ministers Shimon Peres and his slain predecessor Yitzhak Rabin, said Christopher.