No, because the invasion would fail.  A good leader does not lead his troops on suicidal missions.<p>But the oil example actually did happen in real life.  You're the ruler of Japan in 1941.  The U.S. has just cut off your oil supply.  You have months left before your population faces severe hunger and deprivation.  Do you invade Indonesia to take their oil?  I think if I was ruler I would.  How about you?