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Governments everywhere hear the clamor for sustainability,
but most also know they wi l l retain power only if they keep
delivering economic growth.Couple that imperative with the
high coordination costs and fundamental resource usage
inequities that persist across countries—China, for example,
emi ts less than a f i f th of the carbon dioxide per capi ta that
the United States does—and it’s hard not to conclude that
while broad agreements may be possible, they will more
likely prove elusive, as first Kyoto and now Copenhagen have
demonstrated.

Не понятна вот эта часть: Couple that imperative with

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