She said international efforts to coax the Islamic republic back to the table face a "decisive point" in September.
"It is clear to all concerned that when it comes to nuclear weapons, we have reached a decisive point, " he said.
The Czech Republic, seeking a third consecutive title, lost 3-1 in Palermo as Roberta Vinci clinched the decisive point with a 6-3 6-7 (2-7) 6-3 win over Lucie Safarova.
"It's more peaceful out here than it is in Croydon today, " he says, as music booms from the courtside speakers, and indeed, the word "Boom" flashes up on the big screen after another decisive point is scored.
The Wisconsin recall election could well be a decisive turning point in the Presidential election.
That air of inevitability that Mitt Romney was once again exuding following his decisive 15 point win in Florida has vanished overnight.
"The fall of Kismayo, the last stronghold of the extremist Al-Shabaab insurgents in late September, marked a decisive turning point in the conflict, " he said.
Federer had only just flown back to Europe following his five-set defeat by Juan Martin Del Potro in Monday's US Open final, but beat Simone Bolelli on Friday and then secured the decisive third point with a 6-3 6-0 6-4 win over Potito Starace on Sunday.
Tory MPs point to next month's Queen's speech: how he performs in his response to it may prove to be a decisive "tipping point" as to whether he can stave off the speculation about his position.
However, the errors crept in for Montanes and a forehand winner from Murray at break point proved decisive and got the match back on serve.
Supply-chain technology also will march in the direction of standards and ubiquity. (Think of personal computers.) At that point, decisive advantage will go to companies that use their supply chains to boost their rate of hit products.
Led by a decisive dunk by Olasewere and a three-point play from Garner, the Blackbirds went on a 13-4 run to go ahead by 13 only 6 minutes into the half.
On the last point, academic studies have not proved a decisive case either way.
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At this point Loeb thinks Hirai should have been more decisive in his leadership, and clearer with his focus.
Victory over the Chiefs, who are four point above Nottingham, is likely to be decisive in deciding who finishes runners-up to champions Northampton.
They point to periods like the early 1980s when decisive changes by government and record deficit spending were needed to recover the economy from severe downturns.
That's right, there's about 2, 200, 250m gone of the race of a 2000m race, that we'd moved out to quite a decisive lead in some respects and I felt at that point that there was no way that we were going to lose.
The point is that the most arduous retreat is by no means a decisive defeat and can even sow the seeds of historic success.
James, who had stood firm, then blocked Corluka from point-blank range before Pompey broke again to score the second and decisive goal.
Newt Gingrich, the former speaker of the House (and no stranger to risk), thinks a daringly clear agenda would act as a rallying point for America's centre-right majority and could appeal to a decisive 55% of voters, not just a narrow 51%.
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But Clijsters upped the intensity in game eight to claim the decisive break and followed it up by racing to 40-0 and converting her first match point with an unreturnable serve.
He admitted the project had still not reached its "tipping point", but said if the EAC was successful it may prove to be the decisive moment for the project.
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