At last weekend's discussions, the six-power negotiators said Iran presented a two-page document that would have extended the period of discussion for years without halting enrichment.
Since Rouhani's rise, day-to-day relations between Iranian and six-power negotiators have greatly improved.
While Californians readied themselves for yet another day of possible power blackouts, negotiators in Washington continued today to try to hammer out a solution to the state's energy problems.
The theory suggests that a stalemate is unlikely even in a computer face-off, however, because the automated negotiators' power to search for potential solutions is so much greater than humans'.
Mr. Hart said that while the state would honor contracts it had already signed to buy long-term power from generators, negotiators were now demanding better terms for new or incomplete deals.
Otherwise its power as a negotiator and mediator in world politics would be heavily damaged.
Traditionally, professional negotiators associate power with what's called a BATNA, or Best Alternative To a Negotiated Agreement.
The e-tendering system integrates a negotiation process that considers bargaining power and risk preference of negotiators.
Along with the European Union, the United States, Britain, France, Russia and China, Germany is one of the world powers that met with negotiators in early December to discuss Tehran's nuclear ambitions.
The administration is seeking to start a worldwide round of trade negotiations at a summit meeting in Doha, Qatar, in November and has argued that new trade powers would give American negotiators leverage to cut a better deal.
A statement from Mr Karzai's office said Afghan negotiators would stay away from the Qatar talks until "foreign powers" allowed the process to be run by Afghans.
