Iranian Foreign Minister Mohammad Javad Zarif said that the world powers engaged in Talks with Tehran over its nuclear program are shifting their positions and pressing excessive demands.

Iranian Foreign Minister Mohammad Javad Zarif said that the world powers engaged in Talks with Tehran over its nuclear program are shifting their positions and pressing excessive demands.

Marathon talks in the Austrian capital, Vienna, are nearing an endgame after two deadlines were missed in order for more negotiation to take place.

“Unfortunately, we are witnessing both shifts in positions and excessive demands... Several countries [which are members] in the P5+1 group hold different positions. Such issues have made the negotiations difficult. We want a dignified agreement and negotiations, and we will continue to negotiate. The deal would be within reach should the other side seek an honorable and balanced accord,” Zarif said late on Thursday, Press TV reported.

“There are always new ideas on any negotiating table. It is important for everybody to stick to what we have already agreed, and to move forward based on that,” he said when asked about new ideas being brought up in the talks and the differences among member states of the P5+1 group.

Meanwhile, an unnamed senior Iranian official said late on Thursday that Western powers are changing their positions in nuclear talks with the Islamic Republic, warning that the negotiations could "go either way."

"We see certain changes in the positions particularly just last night... on a lot of issues unfortunately," the official said.

He noted that “there was an approach that was acceptable ... but then all of a sudden people came up with some view for changing ideas, and this makes it rather difficult."