Amid rising nuclear rivalry and concerns over space weapon development, some in Tokyo suggest Japan should spearhead efforts to establish new rules for the peaceful use of outer space. The UN's non-proliferation talks have stalled.

The collapse of UN talks on the future of the Nuclear Non-Proliferation Treaty has sharpened concern in Japan that outer space could become the next arena for nuclear and military rivalry. With Russia accused of developing a nuclear anti-satellite capability, China and Russia advancing weapons that can disable satellites, and the US pursuing space-based missile defence systems, some in Tokyo say Japan should take the lead in drawing up new rules for the peaceful use of space. Analysts say any...