N Korea role in warship sinking 'obvious'

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South Korea's foreign minister says it is 'obvious' that North Korea sank a South Korean naval ship in March, reports BBC.
Yu Myung-hwan said there was enough evidence to take the issue to the United Nations.
The Cheonan warship went down on 26 March near the disputed inter-Korean maritime border, with the loss of 46 sailors.
Mr Yu's remarks came as a multinational team prepares to announce the results of its investigation into the incident.
It is the clearest indication to date from South Korea that it blames Pyongyang for the sinking.
North Korea has denied responsibility for the incident, which has increased tensions between the two nations.