International North–South Transport Corridor (INSTC) is between which countries

The International North–South Transport Corridor (INSTC) is a multi-modal trade route linking India; Iran; Russia; and Azerbaijan. It was initiated to reduce cargo transport time and cost between South Asia; Central Asia; and Europe. The corridor involves sea; rail; and road networks; providing an alternative to longer traditional routes via the Suez Canal. It significantly enhances regional connectivity; energy trade; and economic cooperation. The INSTC represents a strategic initiative to improve trade competitiveness and strengthen geopolitical ties among the participating nations.