The new race for space

China denies testing a new hypersonic missile — a potential new threat in space. Meanwhile North Korea tests a new, submarine-launched, missile, sparking more concerns over its ambitions. In this week’s Sitrep, how should the west respond to both events? Foreign affairs analyst Tim Marshall explains how geography can help predict future conflict zones. Plus we hear from the author of a new report on domestic violence inside military relationships, and a woman who left her husband after he turned violent. And we look back at the life of Colin Powell, the first African-American to lead the US military.