John Kerry, President Biden’s high-flying climate czar, will leave his post later this winter to focus on his boss’s re-election campaign. The 80-year-old former secretary of state and onetime Democratic presidential candidate – who has drawn criticism for his luxe jet-setting while preaching energy austerity for the masses – told his staff of his imminent departure after speaking with Biden Wednesday, Axios reported Saturday. The administration has not chosen a replacement for Kerry, who has been Biden’s top climate diplomat since 2021, source familiar with the situation told Reuters. Kerry has not taken an official job in Biden’s re-election, but...