Former external affairs minister and TMC leader Yashwant Sinha on Tuesday said Prime Minister Narendra Modi has a chance to be a "Vishwaguru" (world leader), if he successfully mediates in the Russia-Ukraine conflict. Modi has good relations with Russian President Vladimir Putin and he can play a significant role in ending the ongoing six-day-old war with Ukraine as it is badly affecting the global economy, Sinha told a press conference held at his house. "It is a big opportunity for Modi to become a Vishwaguru if he utilises his good relations with Putin and convinces him to end the war at this juncture as (otherwise) this conflict will continue and ruin the global economy," said Sinha who was the external affairs minister in the Atal Bihari Vajpayee government.