Date: 2311

The incident involved the sudden destruction of the Romulan colony world Tomed, which disrupted space-time throughout the sector and wiped out dozens of asteroid bases and at least one starship, the USS Agamemnon. Thousands of lives were lost, with only the USS Enterprise-B escaping destruction. It rendered the system uninhabitable. The scale of the destruction shocked both governments and brought the Romulan Star Empire to the brink of war with the Federation. In the aftermath, Romulan leadership abruptly reversed its long-standing policy of secrecy and isolation, entering direct negotiations rather than pursuing open conflict. The crisis culminated in the Treaty of Algeron, signed later that same year. As part of the agreement, the Federation formally renounced the development and use of cloaking technology, while the Romulan Star Empire agreed to a long-term withdrawal from direct confrontation. Following the treaty, the Romulans retreated into near-total isolation, maintaining only minimal contact with the Alpha Quadrant for decades.