New Delhi, Sept. 18 -- Russia's largest oil company Rosneft PJSC will assist India with its energy security efforts against the backdrop of the drone attacks on Saudi Arabian Oil Co., or Saudi Aramco, that have caused the biggest-ever disruption in global crude oil supplies, Igor Sechin, chairman of Rosneft, conveyed during his meeting with India's oil minister Dharmendra Pradhan on Tuesday in New Delhi....