Iranian Foreign Minister Mohammad Javad Zarif on Tuesday exhorted that Tehran will never forget the way Delhi supported his country during difficult times and will stand by India under all possible circumstances.“India was on our side through the difficult times and that is why we will never forget you when better times come and I assure you better times will come,” Zarif said in his remarks at a CII event here."Challenges will be overcome. Sanctions are not new for Iran . We have been under one or the other kind of sanction for forty years. What was different from 2008 to 2012 to 2014 was that from our perspective, even if unjustifiably, we were sanctioned under the UN. We will continue to survive and deal with our friends," noted Zarif who will deliver a policy speech on Wednesday at the Raisina Dialogue. “We work with the East and the West. We believe, we do not need to take sides,” he said.“Iran is the most reliable energy provider for India. We have never allowed any consideration to impede our economic relations with our partners. We’ve always been there and we will always be there. In Iran, we rely on our own people for our security, for economic development, for scientific development. That does not mean isolation,” Zarif added.