Pentagon to reduce its role in deterrence of North Korea

US policy document suggests South Korea take primary responsibility, as Pentagon prioritises defending US homelandThe Pentagon foresees a more limited role in deterring North Korea, with South Korea taking primary responsibility for the task, a Pentagon policy document released on Friday said, in a move likely to raise concern in Seoul.South Korea hosts about 28,500 US troops in combined defence against North Koreas military threat and Seoul has raised its defence budget by 7.5% for this year.