US Secretary of State Anthony Blinken warned Thursday of increasing military cooperation between North Korea and Russia, during his visit to South Korea.

“We share deep concerns about the growing and dangerous military cooperation between North Korea and Russia,” Blinken said during a joint press conference with his South Korean counterpart in Seoul.

Blinken also called on China to help prevent North Korea from carrying out "destabilizing" actions such as launching banned missiles.

“China has a unique relationship with North Korea,” Blinken said. “As a result, it has real influence and we hope that China will use this influence to play a constructive role in distancing North Korea from this irresponsible and dangerous behavior.”