China is seemingly playing both sides in regard to Russia's invasion of Ukraine. While coming out in favor of a cease-fire, China was recently the sole supporting vote regarding a Russian draft resolution at the United Nations Security Council. The resolution would have recognized the ongoing humanitarian crisis in Ukraine while absolving Russia as the cause of it.
When news of Russia's aid request to China first came out, Sullivan said the U.S. would be monitoring the situation.
"We also are watching closely to see the extent to which China actually does provide any form of support, material support or economic support, to Russia. It is a concern of ours," he said during a CNN appearance March 13. "And we have communicated to Beijing that we will not stand by and allow any country to compensate Russia for its losses from the economic sanctions."