VIENNA, April 7 -- Iran on Monday said the tangible solution for resolving Tehran nuclear issue could be found in six months, provided all sides involved in the talk have the political will.

The statement was made after the meeting between Iran's Foreign Minister Mohammad Javad Zarif and EU foreign policy chief Catherine Ashton in Vienna ahead of the talk between Iran and six major states (Britain, China, France, Russia, United States plus Germany), so called p5+1 talk.

Speaking to reporters in Vienna, Zarif said, "I believe provided that all sides come to this negotiation with political will and good faith, six months are more than adequate."

The third round of the Iranian nuclear talk will be held on Tuesday and Wednesday in Vienna, aiming to bridging the gap of the ground for starting to draft the final draft.

Officials said the drafting of the agreement could begin in May.

Iran and six major states are headed to a comprehensive agreement for a long time solution for the decade-old disputed Iranian nuclear issue.

Western states want Iran to significantly scale back its nuclear program to address the world concern while providing sanction relief in return.

Western states have long suspected Iran has been developing nuclear weapon undercover of its civilian atomic plan, while Iran said its nuclear plan is solely peaceful.