The United States has expressed serious concern about Russia's deepening ties with China and Iran.
For months, Washington has been warning Iran of consequences for sending missiles to Russia.
The United States has urged China to refrain from supplying military components to Moscow, Bloomberg writes.
However, despite these requests, Iran and China continued their contacts with Russia.
Failure to implement the recommendations raises new questions for Washington.
The United States and its allies are increasingly concerned about the speed and intensity with which Russia, China and Iran are moving closer together.
Countries are acting in defiance of Western prohibitions, despite the introduction of the most extensive sanctions.
Experts see it as a struggle between countries to gain the influence they want around the world to counter the dominance of the United States.
