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Ask those who followed the painful, lower-level climate negotiations last week, and invariably, Saudi Arabia comes up most often as the country that seemed to try the hardest to get in the way of agreement.
"Saudi Arabia is acting as a roadblock," says Liz Gallagher of E3G, a London-based environmental organization.
"In addition to that, they were asking for money for technology themselves … as well as not give anything in.
"So it's really just a harsh play for them to come here and do that."
Saudi Arabia, remember, is one of the world's richest nations — its economy is larger than Canada's. For comparison: Canada threw in $2.65 billion to help developing countries start to reduce their emissions.
Saudi Arabia says only more developed countries should contribute.
Both China and India have been surprisingly constructive, say some observers, while still maintaining the power to scuttle the talks should they wish.