'N. Korea just punching-bag for US, China real target'

US President Barack Obama has threatened to punish North Korea for what he described as 'bad behaviour'. His comments were made in the South Korean capital Seoul, ahead of a nuclear summit. Obama was referring to a planned satellite launch by Pyongyang next month - which many fear is a disguised missile test.

Stephen Lendman, current affairs radio host and author talks ton RT. He says Washington needs a threat in the region to maintain its presence in Asia.