The USA is a leading member of the G8 and G20 groups. These groups contain most of the countries in the world with the largest economies.
Summits or meetings of the leaders of the G8 countries offer the opportunity for the US and other group members to develop closer economic ties to expand trade. In addition, it allows the US another forum to discuss issues of global concern such as:
In 2014, Russian membership of the G8 was suspended because of its involvement in the crisis in Ukraine.
The G20 has similar aims to the G8 but includes an additional 12 members to reflect the growing economic importance of countries such as Brazil, India and Indonesia.