Last year, North Korea conducted 13 tests with at least 25 robots, some of which were newly developed, according to the report to the Security Council Sanctions Committee for North Korea, which the Reuters news agency has taken note of.

"It (the country of North Korea, red's note) continues to develop the infrastructure and capabilities of its missile program," the 67-page report, which will be made public in March, states.

UN sanctions against North Korea are supposed to stifle cash flow to the country, but according to the sanction monitors, coal and oil, for example, are valued at close to $ 400 million to Chinese ports. China, which is one of North Korea's few allies, claims to follow the sanctions.

The isolated dictatorship also continued to carry out cyberattacks against financial institutions and stock exchanges for cryptocurrencies, which also brings illegal revenue to the country, according to the report.