Stressing upon the need to be strong as a country, Defence Minister Nirmala Sitharaman has said that buying S-400 Triumf air defence missile from Russia is a choice that India makes. She was addressing 'The Economist' India Summit – 2018 in Mumbai this morning. She said that American representatives of defence understood this choice that India has to be strong. India needs to be strong and needs to have equipment which are necessary. Ms Sitharaman said Russia has been India's partner for several decades and India has many sources to procure equipments from.<br />''<br />''<br />