And that is an illustration of the fact that it is not always best to try to address two challenges with what in the policy world we call a single-policy instrument.

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By manipulating a single instrument, the prospect of membership, it has brought the once-marginal countries of the Mediterranean securely into the West European fold.

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In addition to its use as a single instrument, the telescope is a key element of the UK's Multi-Element Radio-Linked Interferometer Network (Merlin) high-resolution radio-imaging array.

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In his presentation, Herman van Hooff, director of the host organization, provided an overview of the World Heritage Convention, highlighting that the major aim of this standard-setting instrument, which dates back to 1972, is to cover, in one single document, the concepts of cultural preservation and natural conservation.

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He is also almost single-handedly responsible for transforming the guitar, formerly the junior partner of the flamenco trinity, into an instrument of solo expression far beyond traditional limits.

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