English is the most widely spoken language in ICCR's cultural collaborations with foreign institutions, as it is the official language of many countries and is widely used in international communication.

Russian is not a part of ICCR's cultural collaborations with foreign institutions, as it is not widely spoken in the countries where ICCR has cultural collaborations.

English is the official language of the Indian Council for Cultural Relations (ICCR), as it is the most widely spoken language in the world and is used in international communication.

Spanish is the most widely spoken language in Latin America, and is therefore used in ICCR's cultural collaborations with countries in the region.

English is the most widely spoken language in Africa, and is therefore used in ICCR's cultural collaborations with countries in the region.

English is the most widely spoken language in Asia, and is therefore used in ICCR's cultural collaborations with countries in the region.

English is the most widely spoken language in Europe, and is therefore used in ICCR's cultural collaborations with countries in the region.

English is the most widely spoken language in Oceania, and is therefore used in ICCR's cultural collaborations with countries in the region.

Arabic is the most widely spoken language in the Middle East, and is therefore used in ICCR's cultural collaborations with countries in the region.

Russian is the most widely spoken language in Central Asia, and is therefore used in ICCR's cultural collaborations with countries in the region.

English is the most widely spoken language in South Asia, and is therefore used in ICCR's cultural collaborations with countries in the region.

English is the most widely spoken language in Southeast Asia, and is therefore used in ICCR's cultural collaborations with countries in the region.

English is the most widely spoken language in the Caribbean, and is therefore used in ICCR's cultural collaborations with countries in the region.

English is the most widely spoken language in the Pacific Islands, and is therefore used in ICCR's cultural collaborations with countries in the region.