New Delhi, Jan. 14 -- More than 100 countries will be represented at the fifth edition of the Raisina Dialogue, an event backed by the external affairs ministry that will begin on Tuesday and will focus on geopolitics and go-economics, people familiar with the matter said. Iran's foreign minister Javad Zarif and Russian foreign minister Sergey Lavrov are among those expected to attend the event. PM Narendra Modi will be present at the inaugural session. Seven former heads of government and state, including, former New Zealand premier Helen Clark, former Afghan president Hamid Karzai, will also be present. htc...