Morning Mail: budget’s $45bn bottom-line improvement, Starmer’s make-or-break moment, Trump’s ceasefire threat

Treasurer Jim Chalmers says the budget improvement is driven by ‘the savings we’ve found and the spending restraint we’ve shown’. Photograph: Mick Tsikas/AAP

Morning everyone. Tonight’s budget will promise a $45bn improvement in the bottom line over three years, but will Jim Chalmers be able to boast of an era-defining change like his hero, Paul Keating? We have analysis and comment on what’s coming up later. Elsewhere a Muslim group has complained of dirty election tricks, and Donald Trump says the Iran ceasefire is “on life support” as he contemplates more military action.

Plus: are claims about supermarket food sustainability true? And do your teeth and gums hold the key to good health?