The Latest Breaking News from Simon Tisdall

The killing of Hamas’s political leader has raised tensions yet again. Only a ceasefire in Gaza offers any prospect of peace, says the Observer’s foreign affairs commentator Simon Tisdall

Whoever wins the nomination, a fresh choice will be on offer – a far better scenario than a grudge match between two grumpy old men, says Simon Tisdall, the Observer’s foreign affairs commentator

Letters: Ruth Rosenthal reflects on Tehran’s mission to dominate the Middle East, Adrian de León has little faith in diplomatic channels, Phil Tate takes issue with David Cameron’s remarks, Alfredo Louro fears the game is rigged, and the Rev Graham Murphy says the UK’s position is hypocritical

Netanyahu wanted a wider conflict, and Tehran has walked into his trap. The major powers must immediately head this off, says foreign affairs commentator Simon Tisdall

The mask of invincibility is slipping ever further, and eventually that will matter. This debacle won’t be forgiven or forgotten, says the Observer’s Simon Tisdall

Keir Starmer should set an example by reducing nuclear warheads, reinstate overseas aid and prevail upon Iran to calm the Middle East, writes Simon Tisdall

For many years, this courageous man taunted the corrupt butcher of the Kremlin. But Putin’s enemies so often end up being silenced, says Simon Tisdall, the Observer’s foreign affairs commentator

Netanyahu knows he’s barely clinging to power, Biden is playing a bigger game, and Hamas’s leadership cares little for the vast suffering since 7 October, says foreign affairs commentator Simon Tisdall

The US president is under immense pressure to hit back at Iranian-backed militias, but that would be a disaster, says foreign affairs commentator Simon Tisdall