Kim Hyok Chol said killed by firing squad for 'betraying the supreme leader' after he was 'won over to the US'

Saturday's test suggests that Kim's missiles are improving even as the US wrestles with how to get him back to the negotiating table

First launch of its kind in over a year steps up pressure on Washington amid deadlocked nuclear talks

In telephone conversation that lasts more than an hour, the leaders discuss North Korea, Ukraine, US-Russia trade and 'very, very briefly' Mueller's report

National security adviser says Washington agreed to pay $2 million for release of Jewish student, who died shortly after returning to US

Kim Jong Un tells Putin 'Peace and security on the Korean Peninsula will entirely depend on the US future attitude'

Following summit, Putin says he may be willing to intervene with Washington on North Korea's behalf

Russian leader says Kim Jong Un prepared to give up nuclear arsenal but wants concrete reassurances of safety, is willing to share summit details with Trump

Russian president tells North Korean leader he wants to support efforts to resolve the nuclear standoff and normalize relations with the US

Unclear what type of missile launched as Pyongyang displays unhappiness over deadlocked nuclear talks with US