Russian President Vladimir Putin intends to attend a G20 summit being hosted by Indonesia later this year, Russia's ambassador in Jakarta said on Wednesday, following calls by some members for the country to be barred from the group.

"Not only G20, many organisations are trying to expel Russia....the reaction of the West is absolutely disproportional," ambassador Lyudmila Vorobieva told a news conference on Wednesday.

The United States and its Western allies are assessing whether Russia should remain within the Group of Twenty (G20) grouping of major economies following its invasion of Ukraine, sources involved in the discussions told Reuters.

The likelihood that any bid to exclude Russia outright would be vetoed by others in the club - which includes China, India, Saudi Arabia and others - raised the prospect of some countries instead skipping G20 meetings this year, the sources said.

The G20 along with the smaller Group of Seven - comprising just the United States, France, Germany, Italy, Canada, Japan and Britain - is a key international platform for coordinating everything from climate change action to cross-border debt.