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We need to face it, as a nation we have a reliance on petroleum.

You can mostly forget ethnic or religious differences. The competition for a bigger share of the oil proceeds is behind much of the fighting.

The more we focus on using renewable fuels, the less we are dependent upon foreign oil.

We shouldn't be so dependent on foreign oil.

I believe America's chief strategic vulnerability is our dependence on imported petroleum.

The U.S. now imports over half of its oil supply from the Middle East. This dangerous dependence on foreign energy sources is an issue of national security.

The less oil the world uses, the less important the region that has so much of it becomes.

I believe it is still true that conflicts among major powers usually stem from geopolitical rivalries but rarely from economic competition.

Egypt is the largest wheat importer in the world. In some part, this is due to irrigation issues and inhospitable climes. Egypt's dependence on wheat is also partially because for decades it has been cheaper to import wheat, corn, soy and barley from the U.S. than to grow it locally.

We need to break our dependency on foreign sources of oil, which leaves us at the mercy of foreign powers. To do that, we should increase domestic energy production.