Ten years after the start of the Iraq war, a new Washington Post-ABC News poll finds nearly six in 10 Americans say the war was not worth fighting. Nearly as many say the same about the war in Afghanistan.

A key reason: "A substantial sense that neither war did much to achieve their goals of enhancing U.S. security. Only about half of Americans say either war contributed to the long-term security of the United States, and just two in 10 say either contributed "a great deal" to U.S. security - clearly insufficient, in the minds of most, to justify their costs in lives and lucre."...