AI News Brief: Japanese Prime Minister Takaichi Sanae visited New Delhi on July 2, 2026, to meet with Indian Prime Minister Modi for a summit, where the two sides announced cooperation plans across multiple strategic areas including defense, AI technology, energy security, and economic cooperation. The most landmark outcome is the signing of both countries’ first defense joint R&D agreement, formally upgrading the Japan-India security partnership from the procurement level to a joint development stage. On infrastructure, both leaders specifically mentioned the Japan-assisted India high-speed rail project, with partial sections expected to launch operations in 2027. While specific cooperation mechanisms for AI and energy security have been placed on the agenda, the original summary did not disclose technical details or investment amounts — please refer to the source link for full details. Diplomatically, Modi publicly called Takaichi Sanae his ’little sister,’ highlighting the deep personal rapport between the two leaders, which is expected to help both countries continue deepening strategic trust amid geopolitical pressure.