India and the US on Thursday held talks here on implementation of the July 18 nuclear deal besides various other issues of mutual concern. Indian Foreign Secretary Shyam Saran and US Under Secretary of State Nicholas Burns held restricted meeting followed by a delegation-level meeting, The Press Trust of India (PTI) quoted official sources as saying in New Delhi. Apart from discussions on the road-map for implementation of the nuclear cooperation agreement, the meeting was also expected to take up Iran's nuclear issue. Ahead of the two-day meeting, Burns said the two countries had "ventured into a unique international diplomacy in our bilateral atomic relations."