For several decades, the Soviet Union was a major supplier of defence equipment, and this role was inherited from the Russian Federation. Russia 68%, the United States 14% and Israel 7.2% are the main arms suppliers for India (2012-2016), and India and Russia have deepened their makeup in Indian defense manufacturing cooperation, signing agreements for the construction of marine frigates, ka-226T twin-engine supply helicopters (joint venture (JV) 60 in Russia and 140 in India), brahmos cruise missiles (JV with 50.5% India and 49.5% Russia) (Dec. 2017 update).  A cooperation agreement between India and Russia was signed in December 1988, which led to the sale of a large number of defence equipment to India and the emergence of countries as development partners as opposed to purely buyer-seller relationships, including joint venture projects for the development and production of the fifth generation fighter aircraft (FGFA) and Multirole Transport Aircraft (MTA). The agreement is still in progress for a decade.  In 1997, Russia and India signed a 10-year agreement on the continuation of military-technical cooperation, which included a wide range of activities, including the purchase of finished weapons, joint development and production, and the joint commercialization of military and military technologies.  An interactive list of bilateral and multilateral free trade instruments is available on the TREND Analytics website.  The north-south corridor is the sea, rail and road route for freight transport between India, Russia, Iran, Europe and Central Asia. The line mainly includes freight transport from India, Iran, Azerbaijan and Russia by boat, rail and road.
 The aim of the corridor is to increase commercial links between major cities such as Bombay, Moscow, Tehran, Baku, Bandar Abbas, Astrakhan, Bandar Anzali, etc.  In 2014, two dry roads were carried out, the first being Mumbai in Baku via Bandar Abbas and the second was Mumbai after Astrakhan via Bandar Abbas, Tehran and Bandar Anzali. The objective of the study was to identify and correct significant bottlenecks.   The results show that transportation costs have been reduced by “$2,500 per 15 tonnes of freight.”  Other routes to consider are those within Armenia, Kazakhstan and Turkmenistan. Now, cooperation is not limited to a buyer-seller relationship, but includes joint research and development, training, service-to-service contacts, including joint exercises.