Weekly current affairs: India's hydrogen train, Skyroot's space milestone and more

From breakthroughs in defence, space and clean energy to key geopolitical developments, this week's current affairs featured several significant developments. India boosted its naval capabilities with another MH-60R Seahawk helicopter, launched its first hydrogen-powered passenger train, celebrated Skyroot Aerospace's historic private orbital rocket launch, and saw Indian-origin NASA astronaut Anil Menon begin his maiden ISS mission. Globally, oil markets remained resilient despite the Strait of Hormuz crisis, Ukraine witnessed political unrest amid a government reshuffle, China claimed a breakthrough in advanced chipmaking, and Japan retained its male-only imperial succession law. Here's a quick roundup of the biggest stories shaping India and the world.IndiaIndia's naval power gets a boost with another MH-60R 'Romeo'India has received another MH-60R Seahawk ("Romeo") naval helicopter from the US, with two more expected this week, under the $2.13-billion deal for 24 helicopters signed in 2020. Developed by Lockheed Martin's Sikorsky division, the MH-60R is among the world's most advanced multi-mission naval helicopters and is being inducted to replace the Navy's ageing Sea King fleet. Equipped with advanced maritime surveillance radar, dipping sonar, secure communication systems, Mk 54 torpedoes, Hellfire missiles and guided rockets, the helicopter is designed for anti-submarine warfare, anti-surface operations and maritime surveillance. Operating from aircraft carriers, destroyers and frigates, the MH-60R will significantly strengthen the Navy's ability to detect and track submarines, protect carrier battle groups and enhance maritime security in the Indian Ocean. Read full storyInside India's first hydrogen train: How it works and why it's specialIndia has launched its first hydrogen-powered passenger train, becoming one of a select group of countries to deploy the clean-energy technology. Designed and built largely in India, the 10-coach train—currently the world's longest hydrogen-powered passenger train—runs on hydrogen fuel cells that generate electricity with water vapour as the only emission. Intended mainly for non-electrified and remote routes, the project supports India's green mobility and net-zero goals while reducing dependence on diesel. Experts, however, say its long-term success will depend not just on the train itself but on building a complete hydrogen ecosystem, including affordable green hydrogen production, storage, refuelling infrastructure, safety systems and maintenance capabilities, to make the technology economically viable at scale.