Kid , I’m a student of international relations, you need to update yourself on current regional geopolitical dynamics. Silk Road Economic Belt is one component of One Road One Belt initiative, while the other one is Maritime Silk route. CPEC is where Silk road economic belt and Maritime Silk route meet.
CPEC is going to link to “Silk Road Economic Belt” in Xinjiang (another corridor connecting it to Europe via central asia). Xinjiang province borders Tajkistan, Kazakhstan, Kyrgystan, Russia. Russians have shown interest to join this project, and so have the Iranians , since Gwadar is barely a few km from Iranian border. Thereby giving access to central asian countries , Russia and China access to warm waters of Arabian sea ( and Indian ocean). Iran would have access to China via a land route (via Pak ). Once connected, it will reflect an unprecedented level of regional integration further buttressed by the fact that Pakistan recently joined SCO, and all these regional countries are members of SCO, India being a member of SCO and located really close to CPEC can join in and access the rich central asian reserves, but it is due to your regime’s obduracy on regional issues which will make you a useful idiot of the west in future !!!
Here are a few links of Russia and Iran showing interest in this.
Iran agrees to consider being part of CPEC - The Express Tribune
TASS: Business & Economy - Russia may invest $5 bln in Pakistan in next five years