US negotiating team meets with Iranian counterparts for nuclear talks
US negotiating team meets with Iranian counterparts for nuclear talksReuters

After an all night round of extended talks between Iran and six world powers over Tehran's nuclear program, negotiations have adjourned until later Thursday. 

United States Department of State spokeswoman, Mary Sharp, wrote on Twitter Thursday morning that talks in Lausanne, Switzerland, which are already two days past their March 31 deadline, came to a close at 6 a.m. local time. 

Despite ongoing debate, no agreements have been reached between Iran and the foreign ministers of the United States, Britain, France, Germany, Russia and China. 

Negotiators are expected to resume talks in the coming hours, in yet another attempt to overcome differences and reach an understanding between Iran and the world powers. 

Representatives of the world powers have already begun blaming the lack of progress in talks on Iran. Reportedly, the Iranians are refusing to be flexible or present an alternate position to advance a final deal. 

French Foreign Minister Laurent Fabius, who returned Wednesday night to Lausanne, despite having left for Paris the previous day, told reporters Wednesday that "we are a few meters from the finishing line, but the last meters are the most difficult."

He also urged Iran to make an "extra effort" to reach an agreement. 

For his part, Iran's Foreign Minister, Mohammad Javad Zarif, said that the nuclear talks will only succeed if the West drops its "excessive demands." 

"Iran has shown its readiness to engage with dignity and it's time for our negotiating partners to seize the moment," Zarif told reporters in Lausanne, according to AFP.

Iran had shown that it wants "an entente" with the world but it "will not accept submitting to force and excessive demands. Those we are negotiating with should accept this reality," Zarif declared.