Russia may be close to sharing advanced satellite technology with North Korea after the isolated nation supplied troops to help bolster Moscow’s war in Ukraine, United States Secretary of State Antony Blinken warned Monday.

Secretary of State Antony Blinken is raising concerns about the growing relationship between Russia and North Korea.

North Korea on Monday fired a ballistic missile that flew 1,100 kilometers (685 miles) before landing in waters between the Korean Peninsula and Japan, South Korea’s military said, extending its weapons testing weeks before Donald Trump returns as U.

By developing hypersonic weapons and testing them before the presidential changeover in the United States, North Korea has a significant bargaining chip to use for whenever the new Trump administration comes looking to continue their previous diplomacy with Kim Jong-un.