The US obviously is in a bit of an uncertain period with the DPRK, he was quoted by the Associated Press as saying, and he described Washington's Pyongyang policy as "engagement on the one hand, pressure on the other".

Davies warned that another nuclear test would result in "swift and sure" punishment at the UN Security Council, according to Xinhua.

The DPRK said the launch in April was to mark the hundredth birthday of its founding father Kim Il-sung.

The failed launch led to the collapse of a food aid deal between Pyongyang and Washington under which the DPRK promised to refrain from nuclear and missile tests. Davies expressed Washington's disappointment about Pyongyang's decision to launch the rocket.

It sent a "signal that they can't be trusted to follow through on their own undertakings and their own promises," he was quoted by the AP as saying, adding that the US was no longer interested in words and wants to see actions from the DPRK.

Washington hopes that China can contribute more to solve the issue on the Korean Peninsula, but at the same time, it expects China will do what the US wants it to do, which is impossible, Wang Fan, a professor from China Foreign Affairs University in Beijing said. US policies toward the DPRK will not change soon, Wang added.

Questions:

1. What did Glyn Davies emphasise a need for on Tuesday?

2. What did the DPRK claim the rocket launch in mid-April was for?

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