Sauce about the summit being cancelled from Asian news sources:
Donald Trump calls off Singapore summit with North Korea
https://www.channelnewsasia.com/news/donald-trump-calls-off-kim-jong-un-north-korea-summit-singapore-10275300
Singapore says regrets cancellation of summit between United States and North Korea
https://www.channelnewsasia.com/news/singapore/singapore-regrets-trump-kim-summit-cancelled-10275664
In a statement released by North Korean media, Vice Foreign Minister Choe Son Hui had called US Vice President Mike Pence a "political dummy" for comparing North Korea - a "nuclear weapons state" - to Libya, where Muammar Gaddafi gave up his unfinished nuclear development programme, only to be later killed by NATO-backed fighters.
https://www.channelnewsasia.com/news/donald-trump-calls-off-kim-jong-un-north-korea-summit-singapore-10275300
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