Italy's PM Giorgia Meloni has welcomed leaders of the world's seven richest nations at the G7 summit in Italy.

The members - Canada, France Germany, Italy, Japan, the UK and the United States - meet throughout the year to discuss global events, with one set-piece summit a year.

They are expected to discuss a number of issues, including the wars in Ukraine and Gaza.

The group cannot pass laws - but some of their past decisions have had global effects, including backing a deal in 2021 to tax multinational companies.

This year, the summit is expected to agree a plan to use frozen Russian assets to raise billions of dollars for Ukraine.

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