In an interview final weekend, Iran’s ambassador to the UN stated his nation’s nuclear enrichment ‘won’t ever cease’ as a result of it’s permitted for ‘peaceable power’ functions. It’s the newest growth in an escalation of tensions over Iran’s nuclear programme, which erupted when Israel focused the nation’s nuclear services in June. To grasp why enrichment is so vital, Madeleine Finlay talks to Robin Grimes, professor of supplies physics at Imperial Faculty London. He explains what goes into making a nuclear weapon, and why attending to the stage of weaponisation is so tough