Trump said the US will sanction Russia only if all NATO members end oil imports. Brussels sees it as pressure on Hungary and Slovakia and as an excuse for the White House to delay.

Recently, Trump wrote a letter to NATO nations, stating, "I am ready to do major sanctions on Russia when all NATO nations have agreed, and started, to do the same thing, and when all NATO nations STOP BUYING OIL FROM RUSSIA."

US President Donald Trump has called on all NATO countries to stop buying Russian oil and place tariffs on China of up to 100 percent.