Obama's Strategy and Iran's tactics

The big question for US President Barak Obama to answer now, is whether Iran is playing for time or serious on deal?
Despite the fact that the P5+1 representatives are under the impression of agreeing with Iran that most of its openly declared enriched uranium would be sent outside to be turned into fuel and then exported back to Iran, some of the latter's officials statements raised suspicion.
Asked about such a deal, Iran's ambassador to Britain, who participated in the talks, told the Associated Press that the issue had "not been discussed yet." And when asked if Iran had agreed to Russia taking the uranium, the ambassador replied with an emphatic, "No, no!"
CNN's Elise Labott thinks that the real winner in Thursday's talks is Iran.

[T]he real winner in Thursday's round of talks is Iran, which has largely neutralized international efforts to impose new sanctions against Tehran. (...) All in all, Iran's demonstration of flexibility this week gave it a welcome reprieve without really changing the fundamentals of its nuclear program.

Jackson Diehl, deputy editorial page editor at the Washington Post, writes about the coming failure on Iran:

In the meantime, talks about the details of inspections and the uranium shipments could easily become protracted, buying the regime valuable time. (...) Meanwhile, Tehran's tactical retreat has provided Russia and China with an excuse to veto new sanctions -- something they would have been hard-pressed to do had Iran struck an entirely defiant tone in Geneva.

Reporting from Dubai, The Guardian's Richrad Spencer says that that Iran managed to escape sanctions until 2010.