President Trump landed in Washington on Wednesday morning after meeting with North Korea's Kim Jong Un in Singapore, and he immediately took a victory lap on Twitter: "Everybody can now feel much safer than the day I took office. There is no longer a nuclear threat from North Korea." He added in a second tweet: "Before taking office people were assuming that we were going to war with North Korea. President Obama said that North Korea was our biggest and most dangerous problem. No longer — sleep well tonight!" At the summit, Kim reaffirmed his earlier pledge to move toward "complete denuclearization of the Korean Peninsula," but as of yet, North Korea hasn't actually done anything to reduce what Trump called its "very substantial arsenal."

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