Cubans study oil tanker diplomacy for signs of progress in secret talks with US

This Guardian analysis from Havana carries strong credibility — Ruaridh Nicoll is a named correspondent reporting directly from the scene, and the article draws on multiple credible sources including a US government professor (William LeoGrande), named diplomats, and Miami-based legal experts with direct expertise on Cuba policy. The reporting balances Trump's contradictory public statements against observable events (the tanker arrival, prisoner release) and explores plausible interpretations without over-claiming certainty about confidential negotiations. However, readers should note the framing emphasizes the hardship endured by ordinary Cubans and concludes with concern about economically vulnerable populations, which lends a center-left editorial angle; the article fairly represents conflicting positions on negotiations but gives more prominence to humanitarian concerns and skepticism about regime concessions than a more neutral analysis might.