Washington, June 23: U.S. President Donald Trump contradicted himself Friday, announcing via an executive order that North Korea continues to pose "an unusual and extraordinary threat" to the United States — a statement that comes less than a week after he triumphantly declared that the North s nuclear weapons were "no longer" a problem."The existence and risk of proliferation of weapons-usable fissile material on the Korean Peninsula and the actions and policies of the Government of North Korea continue to pose an unusual and extraordinary threat to the national security, foreign policy, and economy of the United States," Trump wrote Friday."Just landed - a long trip, but everybody can now feel much safer than the day I took office," Trump wrote on Twitter on June 13. "There is no longer a Nuclear Threat from North Korea.""Before taking office people were assuming that we were going to War with North Korea," he added. "President Obama said that North Korea was our biggest and most dangerous problem. No longer - sleep well tonight!"