Democratic presidential candidate Marianne Williamson on Monday unveiled details of her plan to create a peace-building agency to focus on ending violence following decades of U.S. military conflict and an uptick in mass shootings.

In her announcement, the spiritual author called for a "Department of Peace" to spur peace initiatives domestically and abroad.

“I believe our country’s way of dealing with security issues is increasingly obsolete," Williamson said in a statement. "We have the finest military force in the world, however, we can no longer rely on force to rid ourselves of international enemies."

Marianne Williamson, seen here speaking Monday in Iowa, announced details in her plane to crate a "Department of Peace." (Tim Hynds/Sioux City Journal via AP)

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"The planet has become too small for that, and in so doing, we overburden our military by asking them to compensate for the other work that we choose not to do, and we are less effective, and less secure, because of our choices," she added.

The main duties of the proposed agency would be promoting justice and democratic principles, she said, expanding human rights, working to avert armed conflict, ending gun violence, addressing white supremacy and promoting conflict mediation and resolution.

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Specifically, the department would work with local, state governments to decrease gun violence, rehabilitate prisoners, examine how food supply affects behavior and trying to end the school-to-prison pipeline. Abroad, Williamson wants to help governments end conflicts without providing U.S. military assistance and providing and coordinating humanitarian relief.

The plan calls for the cabinet's secretary to serve on the National Security Council and would have power to coordinate with other agencies — including the U.S. Departments of Agriculture, Defense, Education, Justice, and State, and the new U.S. Department of Children and Youth.

The department also would create a peace academy that would offer a four-year concentration in peace education. The academy would be modeled after the military service academies and graduates would be required to serve five years in public service programs focused on domestic and international conflict resolution.

Funding for the agency would come from various peace-building and violence-reduction efforts within the federal government.

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"As the Department [of Peace] becomes effective in its work, a true 'peace dividend,' reflecting a declining domestic and international need for the instruments of violence, will more than fund the costs of the Department’s activities," Williamson said.

Last month, Williamson criticized the U.S. budget for peace-building agencies, which she said gets $1 billion of the $40 billion given to the State Department. Throughout her campaign, she has vowed to defeat President Trump with a politics of "love."

Fox News' Patrick Ward contributed to this report.