What is the G20 and what are the key issues for the 2023 summit?

Leaders of the world's richest and most powerful countries will attend the two-day G20 Summit in India's capital New Delhi starting September 9.

This is the first time India will host such a powerful group of world leaders. The capital has been adorned with ornamental flowers and fountains at traffic roundabouts while public buildings and sidewalks have been given a fresh coat of paint.

Security is being provided by anti-drone systems, cutouts of langurs to scare away monkeys and 130,000 police and para-military personnel.

What is the G20?

The world's 20 major countries formed an economic grouping after the Asian financial crisis in 1999 with the understanding that such crises could no longer be contained within a nation's borders and required better international economic cooperation.

The bloc currently accounts for 80% of global gross domestic production (GDP) and 75% of international trade.

Its members include Argentina, Australia, Brazil, Canada, China, France, Germany, India, Indonesia, Italy, Japan, South Korea, Mexico, Russia, Saudi Arabia, South Africa, Turkey, United Kingdom, the United States and the European Union.

Although only treasury chiefs met in the initial years, heads of all member nations decided to meet once a year for a leaders' summit post the 2008 financial crisis.

What are the key issues this year?

India will hand over the presidency to Brazil on December 1.