North Korea will "pay a price" for the nuclear and missile tests it has carried out in recent days, the US ambassador to the UN has said, according to BBC.
Susan Rice said international pressure on North Korea would increase, until it realised the tests had left it "further isolated and further debilitated".
Her comments come a day after the UN unanimously condemned North Korea for conducting an underground nuclear test.
North Korea responded by firing two more missiles hours later.
Ms Rice told CBS news channel in the US that Pyongyang's actions were "clearly provocative and destabilising actions which threaten international peace and security".
"North Korea needs to understand that its actions have consequences," she said.
"The pressure will increase on North Korea, economically and otherwise, and North Korea will realise that its actions have only left it further isolated and further debilitated."
Ms Rice said the international community would not "throw up our hands and let them pursue this path" and that North Korea would "pay a price for their action".
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