STOCKHOLM

AMERICA’S stated goal is to remove President Bashar al-Assad from power in Syria. The United States also insists that any solution to the Syrian crisis should guarantee religious and ethnic pluralism. However, this rosy vision of a moderate and secular Syria after Mr. Assad’s downfall will not be achieved if the United States continues to depend on regional allies that have little interest in such an outcome.

President Obama has relied heavily on Turkey in seeking to oust Mr. Assad and Secretary of State John Kerry is scheduled to visit the Turkish capital, Ankara, later this week. But Turkey is part of the problem. It is exacerbating Syria’s sectarian strife, rather than contributing to a peaceful and pluralistic solution.

While the Obama administration has encouraged a broad Syrian opposition coalition, in which the influence of Islamists would be circumscribed, Turkey has not been of any assistance whatsoever. Instead, the Turkish government has continued to throw its weight behind the Muslim Brotherhood. The Brotherhood dominated the Syrian National Council, which is headquartered in Istanbul, and has succeeded in eclipsing other groups within the new opposition coalition, effectively thwarting the American effort to empower non-Islamists.

Moreover, while sponsoring the Sunni cause in Syria, the Turkish government has made no attempt to show sympathy for the fears of the country’s Alawite, Christian and Kurdish minorities. The Alawites and the Christians have backed the government in large numbers and fear retribution if Mr. Assad is toppled.