The US Congress has been formally notified of the possibility of the biggest defence deal ever with India, worth over Rs25,000 crore.According to a statement from the US embassy, the Defense Security Cooperation Agency has notified Congress on April 22 of the possible sale of 10 Boeing C-17 Globemaster III aircraft to the Indian Air Force.When inducted, C-17, one the world’s big transport aircraft, will replace the Russian IL-76 as the biggest aircraft in the Indian military.The…