8 Jan. Washington Post Op-Ed - The Real Choice in Iraq by Zbigniew Brzezinski.

... Victory, as defined by the administration and its supporters -- i.e., a stable and secular democracy in a unified Iraqi state, with the insurgency crushed by the American military assisted by a disciplined, U.S.-trained Iraqi national army -- is unlikely. The U.S. force required to achieve it would have to be significantly larger than the present one, and the Iraqi support for a U.S.-led counterinsurgency would have to be more motivated. The current U.S. forces (soon to be reduced) are not large enough to crush the anti-American insurgency or stop the sectarian Sunni-Shiite strife. Both problems continue to percolate under an inconclusive but increasingly hated foreign occupation.

Moreover, neither the Shiites nor the Kurds are likely to subordinate their specific interests to a unified Iraq with a genuine, single national army. As the haggling over the new government has already shown, the two dominant forces in Iraq -- the religious Shiite alliance and the separatist Kurds -- share a common interest in preventing a restoration of Sunni domination, with each determined to retain a separate military capacity for asserting its own specific interests, largely at the cost of the Sunnis. A truly national army in that context is a delusion. Continuing doggedly to seek "a victory" in that fashion dooms America to rising costs in blood and money, not to mention the intensifying Muslim hostility and massive erosion of America's international legitimacy, credibility and moral reputation...