International leaders visit Tuvalu as part of climate talks co-hosted by Australia ahead of Cop31 conferencePacific island leaders have urged a promised global transition away from fossil fuels must not be left open to renegotiation as they gather in tiny Tuvalu in a bid to build momentum before a major climate summit.About 50 dignitaries – 14 national heads including Australia’s prime minister, Anthony Albanese, a list of climate change ministers and the heads of global agencies – flew to