Nuclear nightmare: reckless leaders push the world back to the brink | Simon Tisdall

Leaders of unstable nuclear-armed states do dangerous and foolish things when under stress. They miscalculate, provoke, overreach. Given the febrile state of bilateral relations, last week’s aerial military clash between Russia and the US over the Black Sea inevitably intensified fears of nuclear escalation. The incident dramatised how dangerous Vladimir Putin, cornered by his existential Ukraine blunder, truly is – and the risks he is increasingly prepared to run. But he’s not the only one. As often the case over the past year, Putin relied on American restraint. US forces…

What is the Aukus submarine deal and what does it mean? – the key facts

In a tripartite deal with the US and the UK, Australia has unveiled a plan to acquire a fleet of up to eight nuclear-powered submarines, forecast to cost up to $368bn between now and the mid-2050s. Australia will spend $9bn over the next four years. From this year Australian military and civilian personnel will embed with US and UK navies, including within both countries’ submarine industrial bases. From 2027 the UK and the US plan to rotate their nuclear-powered submarines through HMAS Stirling near Perth as part of a push…