The Canadian police have arrested three Khalistani terrorists -- including Gurpatwant Singh Pannun's close aide, Inderjeet Singh Gosal -- over firearms-related charges last week. The three separatists were arrested during a traffic stop operation in Ontario on September 19, according to authorities. NDTV World's Maha Siddiqui sheds light on the story from Vancouver. India-Russia forge future in space with giant 3D printer. India and Russia are joining forces in advanced 3D printing for space and nuclear applications. A massive electron beam 3D printer, showcased in Moscow, will soon arrive in India. It prints and welds titanium parts, including rocket engine components, marking a new chapter in Indo-Russian collaboration. NDTV's science editor Pallava Bagla reports from Moscow.