Since Thursday, aircraft carrying as many as 30 delegations have touched down in Tehran�s Imam Khomeini and Mehrabad International Airports, with yet more scheduled to arrive.
In May, Rouhani won re-election in a landslide victory after securing 57 percent of the votes and defeating his main contender Ebrahim Raeisi, the current custodian of the Holy Shrine of Imam Reza (PBUH).
The swearing-in ceremony is slated to be held (at Majlis Parliament) on Saturday.
On Thursday, Leader of the Islamic Revolution Ayatollah Seyyed Ali Khamenei formally endorsed Rouhani as president.
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Representatives from a total of 92 countries are slated to partake in the ceremony.
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Most lately, Madagascar�s Parliament Speaker Jean Max Rakotomamonjy, his Cambodian counterpart Nguon Nhel, Lesotho�s King Letsie III, First Ghanaian Deputy President Alhaji Bawumia, Zimbabwe�s President Robert Mugabe, his Moldovan counterpart Igor Dodon, and Chairman of the Britain-Iran Parliamentary Friendship Group Richard Bacon have reached Tehran.
Also among the dignitaries are the President of the Presidium of the Supreme People�s Assembly of North Korea, Kim Yong-nam, and other North Korean political figures. The Islamic Republic recently designated a new building accommodating North Korea�s diplomatic mission.
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Ebrahim Rahimpour, an Iranian deputy foreign minister, attended the ceremony, where he stressed the importance of expanding bilateral ties between the two sides.
He hailed Pyongyang�s support for Tehran during the1980s war imposed by the former Iraqi regime on Iran, with the two sides agreeing�to ratchet up bilateral cooperation in political, economic, and cultural fields.
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The other notables to have so far arrived for the inaugural ceremony include are the Lebanese resistance movement of Hezbollah�s Deputy Secretary General, Sheikh Naim Qassem, Pope Francis� Nuncio to Iraq and Jordan Alberto Ortega, and Secretariat of the UN Conference on Trade and Development�s Secretary General Mukhisa Kituyi.
Some other dignitaries are from Ireland, Croatia, Hungary, Lithuania, Portugal, Malaysia, Ugandan, Guyana, Sierra Leone, Tanzania, Swaziland, and Namibia.