US Ambassador Sergio Gor Joins Diwali Celebrations, USPS Unveils New Stamp - US Ambassador to India, Sergio Gor, recently joined vibrant Diwali celebrations at the US Embassy in New Delhi, extending ... Get Latest News on International only on lokmattimes.com. Sharing glimpses of the festivities, Gor highlighted the spirit of the 'festival of lights'.Meanwhile, the United States Postal Service (USPS) has honored Diwali by unveiling a new 'Forever' stamp.