Washington, Sept. 13 -- US President Donald Trump has called on NATO allies to impose major sanctions on Russia and stop buying Russian oil to end the war in Ukraine, adding that he proposed to impose tariffs of 50 per cent to 100 per cent on China to weaken its economic grip on Russia.

In a letter to NATO nations, Trump stated, "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."

Trump criticised NATO's lack of commitment, saying, "NATO's commitment to WIN has been far less than 100%, and the purchase of Russian Oil, by some, has been shocking! It greatly weakens your negotiating position and bargaining power over Russia...