By Martyn Landi, PA Technology Correspondent & Lawrence Matheson Sir Nick Clegg has hailed artificial intelligence (AI) as a “sword and a shield” in the fight against harmful content, asserting that it’s not just a tool for spreading misinformation. The ex-Liberal Democrat deputy prime minister, who now spearheads global affairs at Meta, the conglomerate behind Facebook, Instagram, and WhatsApp, made his remarks at an AI event in Meta’s London hub. During his speech, Sir Nick acknowledged the importance of being “vigilant” about generative AI’s potential to churn out disinformation aimed at el…