Investigative journalists Maria Ressa of the Philippines and Dmitry Muratov of Russia won the Nobel Peace Prize for their work promoting freedom of expression. Ms Ressa, also a US citizen, is co-founder of Rappler, a digital media company for investigative journalism. Mr Muratov is a co-founder of Russia's leading independent newspaper Novaya Gazeta. NDTV spoke with Ms Ressa on winning the Nobel Peace Prize and her work.