Iran's decision to keep India out and welcome China to the scene is a huge strategic setback for India, observes Dr Rajaram Panda.
Prime Minister Narendra Modi on Sudnay arrived in Tehran on a two-day visit.
The Geneva agreement is a signal, which at least Saudi Arabia and Israel are so reading, that normalisation of relations between US and Iran is not merely about the nuclear fuel cycle, says K C Singh.
Invoking India's "civilisational ties" with Iran, Prime Minister Narendra Modi flew in to Tehran on Sunday on a two-day visit, saying his talks with the Iranian leadership would provide him an opportunity to advance the "strategic partnership" between the two countries.
Saudi Arabia has severed diplomatic ties with Iran following attacks on the kingdom's embassy and consulate in the Islamic Republic over the execution of a Shiite cleric.
India's low passion, very cautious, relationship with Iran of the last 36 years awaits transformation, says Lieutenant General Syed Ata Hasnain (retd). Prime Minister Modi's visit cannot be a negotiating event; it is a symbolic one to strengthen the politico-diplomatic relationship.
The White House said it has 'a large body' of evidence indicating that the Assad regime was responsible for the April 7 chemical attack in Duma.
Negotiating a sustainable compromise with Iran is not getting any easier, and this delay might not yield the desired result of bringing Tehran's nuclear programme under stringent limits, says Claude Smadja