But if little seems to be changing inside Cuba, its long-strained relations with the West may be easing.

但如果古巴内政将不会有任何改变的话，古巴与西方国家长久僵持的关系可能会得到缓解。

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But Mr Maduro has also been described as a pragmatist, whose achievements include a turnaround in long-strained relations with Colombia.

BBC: Profile: Nicolas Maduro

Relations between the central government and Barcelona have long been strained over issues such as devolution, distribution of revenues and local identity, and Montilla did not wish to serve up another pretext for raising tension between Catalonia and the rest of Spain.

BBC: Bullfighting in Catalonia: The death of Barcelona��s ring

In late 1988, relations between the United States and Germany were seriously strained when a long-running, secret conflict over U.S. allegations tying a German company, Imhausen, to the then-nearly complete Libyan chemical warfare plant at Rabta broke into public view.

CENTERFORSECURITYPOLICY: Center For Security Policy