More Sanctions Mean More Nuclear Tests - N/Korea
Despite attempts by world leaders to curtail the excesses of North Korea, it appears several warnings are falling on deaf ears.
Authorities in Pyongyang have described new United Nations sanctions as "the most vicious, unethical and inhumane act of hostility".
Meanwhile, the presidents of the US and China committed to "maximising pressure" on the North through vigorous enforcement of UN resolutions.
Earlier, the US and South Korea carried out joint military exercises.
North Korea fired its latest missile over Japan on Friday. It traveled 3,700km (2,299 miles), putting the US Pacific territory of Guam, which North Korea says it has a plan to target, within reach.
The launch followed a fresh round of UN sanctions and was unanimously condemned by the UN Security Council as "highly provocative".