Some of the across-the-spectrum organizations involved (Cato Institute (traditional conservative) and The Institute for Policy Studies (progressive) also support the Network for Okinawa.
Here's a report from Sam Smith of the US-based Progressive Review on what they're calling "Full Spectrum Peacebuilding":
Last Saturday I spent eight hours with three dozen other people in a basement conference room of a Washington hotel engaged in an extraordinary exercise of mind and hope.
The topic was, by itself, depressingly familiar: building an anti-war coalition. What made it so strikingly different was the nature of those at the table. They included progressives, conservatives, traditional liberals and libertarians. Some reached back to the Reagan years or to 1960s activism, some - including an SDS leader from the University of Maryland and several Young Americans for Liberty - were still in college...
The session had been conceived by long time activist and current head of Voters for Peace, Kevin Zeese, along with artist George D. O'Neill, Jr. who had been chair of the Rockford Institute, a leading traditional conservative intellectual think tank in the 1980s, and who had worked on Pat Buchanan's 1992 presidential campaign.
What we shared was an antipathy towards war. It was not so much that we were anti-war as we were seeking a post-war world. Our approaches might differ but our goals were, at worst, next door.
As Zeese put it in an introduction the session, it was about "views from the right, left and radical center, views that reflect those of many Americans which are not represented in the political dialogue in Congress or the White House, or the mainstream media. Throughout American history there have been times when movements developed that were outside the limited political dialogue of the two major parties...
"Polling actually shows majorities often oppose war and escalation of war. But these views are not represented in government or the media. In addition, opposition to war is not limited to people on the left; it covers the American political spectrum and it always has. There is a long history of opposition to war among traditional conservatives. Their philosophy goes back to President Washington's Farewell Address where he urged America to avoid 'foreign entanglements.' It has showed itself throughout American history. The Anti-Imperialist League opposed the colonialism of the Philippines in the 1890s. The largest anti-war movement in history, the America First Committee, opposed World War II and had a strong middle America conservative foundation in its make-up. The strongest speech of an American president against militarism was President Eisenhower's 1961 final speech from the White House warning America against the growing military-industrial complex. In recent years the militarist neo-conservative movement has become dominate of conservatism in the United States. Perhaps none decry this more than traditional conservatives who oppose massive military budgets, militarism and the American empire.
"Of course, the left also has a long history of opposition to war from the Civil War to early imperialism in the Philippines, World Wars I and II through Vietnam, Iraq and Afghanistan. It includes socialists, Quakers, social justice Catholics and progressives. Indeed, the opposition to entry into World War I was led by the left including socialists, trade unionists, pacifists including people like union leader and presidential candidate Eugene Debs, Nobel Peace Prize winner Jane Addams and author and political activist Helen Keller. . .
"Opposition to Vietnam brought together peace advocates with the civil rights movement, highlighted by Dr. Martin Luther King, Jr.'s outspoken opposition to the war. . . .