Vienna, July 10 (RHC)-- Iranian Foreign Minister Mohammad Javad Zarif says the P5+1 group of world powers are shifting their positions and pressing excessive demands as marathon talks over Tehran’s nuclear energy program are nearing an endgame, Press TV reports.

“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.

“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 in response to a question by Press TV correspondent 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."

"I believe that a comprehensive agreement is within reach, it just requires people to abandon unnecessary or delusional objectives and just move forward with what is at hand and what is achievable," the official noted, adding: "It's not a multilateral negotiations. It looks like you're doing five bilaterals. Every country has their red line sometimes, it's interesting."

He stated that while China and Russia support the abolition of a UN Security Council arms embargo on Iran, there is discrepancy among other P5+1 members.