Welcome to Issue 89 of SubTel Forum, focusing on 'Regional Systems'. This edition delves into the intricacies and developments of regional submarine cable systems, highlighting their critical role in global telecommunications. The issue features an exordium by Wayne Nielsen, who shares a personal anecdote about visiting the Churchill War Rooms in London, drawing parallels between historical communication links and modern-day submarine cables. As regional systems continue to evolve, this issue provides insights into their impact on connectivity and the telecommunications industry at large.