Kharrazi, who was in Cairo to attend the funeral ceremony for the late Palestinian Authority Chairman Yasser Arafat, returned home Friday night.
Arafat died at 02.30 GMT Thursday in a Paris military hospital at the age of 75. He was airlifted to France on October 29 after suffering severe stomach pains in his West Bank headquarters. He was in a coma since November 3.
"I will never give up any opportunity for talks and will not refuse to negotiate with any who signifies a desire to speed up the resolution of this issue if there is any," the minister told IRNA before his departure for Tehran.
"One will continue with talks when he sees progress being made but will stop when he feels nothing is being achieved. This is the nature of a negotiation," he said.
Turning to the subject of the latest talks between Iran and the EU Big 3 in Paris, he said the negotiations were very difficult and crucial.
"The two sides were able to work out a joint proposal and the Iranian side has submitted its decision. Now it is the turn of the Europeans to submit theirs.
"Talks with the Europeans will continue. If they agree with what we have proposed, further negotiations will be held that could consolidate Iran's claim."
Pointing to IAEA chief Mohamed ElBaradei's awaited report on the agency's findings on Iran's nuclear program, Kharrazi expressed hope it would reflect all developments on the Iran nuclear case, clarify all questions that have remained unanswered and prepare the ground for closure of the case with the nuclear watchdog.
"We did our utmost to cooperate with the agency and build the needed confidence. Iran can take no further measures," Kharrazi said, suggesting that "the time is ripe to close Iran's case."
Remarking on the eventful coincidence in the laying to rest of the late PLO leader Yasser Arafat and International Qods Day on Friday, he said: "It is a beautiful coincidence -- the funeral procession and burial of Yasser Arafat, who was a prominent figure in the history of the Palestinian struggle, and Qods Day. It will make history."
He then highlighted the importance of the Palestinians moving forward during this difficult period in their history, and reiterated the need for them to maintain unity.
He called on officials of Islamic states to continue their support for the Palestinians in their struggle for statehood and a just peace and for the Organization of the Islamic Conference to take more decisive measures in this regard.
Ali-Akbar Mohtashamipour, secretary general of the Palestinian National Conference (PNC), Mohammad Shariatmadari, an advisor to President Khatami and a PNC member and MPs Mohammad-Reza Tajeddini, Hossein Sheikholeslam, Qodratollah Alikhani and Elham Aminzadeh accompanied the minister to the funeral ceremony of Yasser Arafat Friday in Cairo, Egypt.
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