Energy can lead to wars? I’ve been saying this for years ever since the disastrous Carter administration. That is why we need to debelop a comprehensive energy plan which also includes building and leasing more oil refineries, more offshore drilling for oil and building and leasing many more nuclear power plants in addition to alternative energy possibilities such as hydrogen powered, wind, solar, clean coal and geothermal.
If our leaders were on our side we could do that. Even Republicans, when in power, refuse to do it.
We have depending on how you calculate it we have a couple hundred years of fuel laying around in various forms.
Oil is not single resource vital to economy. If all countries will accept consumerism as base of their societies, they will deplete other recsources in no time - fresh water, land for agriculture, timber, oxygen, some metals, etc.