Marco Rubio has unique power to promote peace, but he hasn’t. He is almost as bad for the world as Trump | Simon Tisdall

As chief US diplomat, Rubio could do great good. His pandering and neglect are a disgrace we shouldn’t ignore Viewed from the state department in Washington DC, the world is on fire – but record heatwaves are not to blame. The unresolved Iran war has badly burned Donald Trump. His military campaign conclusively failed, energy and food prices are still rising, and a Republican rout in November’s midterm elections looms. Humiliatingly, Israel this week flatly rejected his latest Gaza peace…