China and Russia have blocked efforts by Washington to impose U.N. sanctions on five North Koreans, diplomats said Thursday, as Pyongyang seeks to “overpower” the U.S.’ “hostile moves” in a “long-term confrontation.” The news follows a closed-door U.N. Security Council meeting on North Korea on Thursday—the second in two weeks—following Pyongyang’s fourth missile launch this month, which involved two tactical guided missiles. Chinese diplomats at the U.N. Security Council said that they needed more time to review the sanctions, according to envoys, who spoke on the condition of anonymity, while Russian officials said that more evidence was needed to support the U.S. proposal. Earlier the U.S. ambassador, Linda Thomas-Greenfield, issued a joint statement on behalf of eight countries—the United States, Albania, Brazil, France, Ireland, Japan, United Arab Emirates, and the United Kingdom–that urged the Security Council to be unified in condemning Pyongyang’s “unlawful behavior.” “These launches demonstrate the regime’s determination to …