There are indications North Korea is planning to carry out its fifth nuclear test, despite condemnation of its last test in January.
North Korea launched to missile test. The two launches on Thursday came after a similar test on 15 April.
The UN Security Council is preparing a response to North Korea after it test-launched two mid-range missiles, China’s UN ambassador Liu Jieyi said.
Observers said although all the tests appear to have failed, such actions, which violate sanctions, were “deeply troubling”.
It comes amid a recent ramp-up in weapons activity as the North prepares for a rare party congress.