The EU delegation will not support a statement at the G20 meeting if it did not include condemnation of Russia's war against Ukraine, as Reuters reports with reference to its own source.

Separately, Josep Borrell, High Representative of the European Union for Foreign Affairs and Security Policy, says the success of the gathering in New Delhi would be measured by what it could do about the war and its impact.

"This war has to be condemned. I hope, I am sure that India's diplomatic capacity will be used in order to make Russia understand that this war has to finish," Borrell told reporters.

Russia said it considers G20 a prestigious forum "to firmly and openly talk about the reasons and instigators of the current serious problems in world politics and the global economy."

The main G20 meetings will be held on Thursday after a welcome dinner on Wednesday.

G20 includes the wealthy G7 nations as well as Russia, China, India, Brazil, Australia and Saudi Arabia, among other nations.

Host India said the war in Ukraine would be an important point of discussion but "questions relating to food, energy and fertiliser security, the impact that the conflict has on these economic challenges that we face" would also receive "due focus".

The meeting of foreign ministers comes days after a meeting of G20 finance ministers in Bengaluru failed to reach a consensus on a joint statement (Ukr).

The reason was the reluctance of Russia and China to agree on formulations acceptable to the other regarding the Russian Federation's war against Ukraine.