Saudi Arabia on Sunday came under attack globally a day after it carried out mass execution of 47 people, including Shia cleric Sheikh Nimr al-Nimr who was a vocal critic of the government and the Saudi monarchy.
Prime Minister Narendra Modi has made his debut among the world's most powerful people, ranked 15th on the Forbes list topped by Russian President Vladimir Putin who pipped his US counterpart Barack Obama for a second year in a row.
Trump said the sanction will deny the Iranian Supreme leader access to financial instruments.
Incumbent Hassan Rouhani faces stiff competition from hardline cleric Raisi.
Shocks were also felt in Pakistan, Lebanon, Kuwait and Turkey, news agencies in those countries reported.
The possibility of a deal between Iran and the world on its nuclear programme has some perils but much promise for India, says Uday Abhyankar
The Chabahar port, says Ambassador M K Bhadrakumar, 'can be the first significant footfall in an Indian variant of the 'Belt and Road' initiative.'
'Tehran senses that the Modi government is inexorably gravitating toward the US-Israeli-Saudi axis, jettisoning India's traditional independent Gulf policies,' notes Ambassador M K Bhadrakumar.
'The bigger challenge and dilemma for Pakistan would be if the US and Saudi Arabia go full throttle against Iran and enforce regime change in Tehran.' 'That would be bad news for Pakistan, especially with the current instability in Balochistan,' notes Brigadier Narender Kumar (retd).
Prime Minister Narendra Modi on Sudnay arrived in Tehran on a two-day visit.
Iran's decision to keep India out and welcome China to the scene is a huge strategic setback for India, observes Dr Rajaram Panda.
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.
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
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.