On Republic Day 2003, President Khatami of Iran shared the podium with his Indian counterpart as Chief Guest. In August 2005, a proposed visit by newly elected Iranian President Mahmoud Ahmadinejad failed to materialize. What has changed since Khatami’s high profile visit?
https://www.hindustantimes.com/india/what-changed-post-2003/story-Uba86KEtnXgfgDN8MY6iqI.html