South Korean and U.S. missiles are displayed at the Korea War Memorial Museum in Seoul, May 26. AP-Yonhap

The United States imposed sanctions on two Russian banks, a North Korean company and a person it accused of supporting North Korea's weapons of mass destruction program, Friday, increasing the pressure on Pyongyang for its renewed ballistic missile launches.

The latest American move came a day after China and Russia vetoed a U.S.-led push to impose more United Nations sanctions on the North for its ballistic missile launches, publicly splitting the U.N. Security Council for the first time since it started punishing Pyongyang in 2006.

The vetoes came despite what the United States says was the sixth test of an intercontinental ballistic missile (ICBM) by North Korea this year and amid signs that Pyongyang is preparing to conduct its first nuclear weapon test since 2017.

The U.S. Treasury Department in a statement said it targeted Air Koryo Trading Corp as well as Russian financial institutions the Far Eastern Bank and Bank Sputnik for contributing to procurement and revenue generation for North Korean organizations.

Washington also designated Jong Yong Nam, a Belarus-based representative of an organization subordinate to the North Korea Second Academy of Natural Sciences (SANS), who Washington said has supported North Korean organizations linked to the development of ballistic missiles.