The United Kingdom Atomic Energy Authority (UKAEA) and the US Department of Energy’s Princeton Plasma Physics Laboratory (PPPL) signed a Joint Declaration of Intent on September 14, 2026, to explore linking UKAEA’s SUNRISE supercomputer with PPPL’s STELLAR-AI platform through a partnership known as the SUNRISE–STELLAR-AI Federation, the UKAEA announced. The declaration was signed at the Global Fusion Policy Summit, held at Mansion House in London on September 14, 2026. The summit aims to…