Ahmedabad/New Delhi, Oct. 22 -- US secretary of state Marco Rubio on Wednesday toured Reliance Industries Ltd's (RIL) complex at Jamnagar in Gujarat, home to the world's largest single-site oil refinery, after telling reporters earlier in the day that conversations between US authorities and the conglomerate were aimed at identifying opportunities to partner and work together in energy. RIL chairman and managing director Mukesh Ambani and executive director Anant Ambani hosted Rubio, who also visited the Dhirubhai Ambani Green Energy Giga Complex and Vantara, the company's animal rescue and conservation centre, and is staying overnight at the RIL township near Jamnagar. US ambassador to India Sergio Gor accompanied Rubio. Officials said Rubio was expected to discuss Venezuelan crude and RIL's proposed refinery project in the US during the visit. The US State Department said in an X post that Rubio's second visit to India this year underscored Washington's commitment to commercial investment, energy cooperation and strategic partnership between the two countries. Before heading to Gujarat, Rubio met Adani Group chairman Gautam Adani and Tata Sons chairman N Chandrasekaran in Mumbai. Asked by reporters before the visit whether he was seeking an investment commitment from Reliance or an agreement to refine more Venezuelan crude, Rubio said he aimed to have a "broader discussion about their presence globally at a time in which energy is featuring prominently in many of the geopolitical decisions that are being made". Describing Reliance as a prominent energy company with a large investment in the US, he said: "This is a company.that has the capability to refine the heavy crude that's produced in the western hemisphere, including from Venezuela." On Tuesday, Rubio had described India as a "refining superpower" while speaking to reporters in Mumbai, and said RIL could process larger volumes of Venezuelan crude as the country's oil production increased....