Dr Alf may recall the last time oil imports were banned before World War II on Japan.
This was done by America, Holland and Britain to force the Japanese into war.
Japan was duly forced and it took two nuclear bombs one on Hiroshima, and the second on Nagasaki to force them to surrender.
Prior to that the Japanese ran riot over Asia, humiliating the British in Singapore , murdering 500,000 people in the Chinese city of Nanking and occupying islands all over the Pacific which the Americans had to clear at great loss of life one by one.
North Korea has nuclear weapons and the 4th biggest army in the world, the Pentagon has war gamed defeating them many times but the result is a win with enormous casualties.
Putin also reads the PNAC website and he too fears the worst.
He is not wrong so before people talk themselves into World War wiser heads must prevail.