The withdrawal of a senior intelligence adviser after an online campaign to prevent him from taking office has ignited a debate over whether powerful pro-Israel lobbying interests are exercising outsize influence over who serves in the Obama administration.

When Charles W. Freeman Jr. stepped away Tuesday from an appointment to chair the National Intelligence Council -- which oversees the production of reports that represent the view of the nation's 16 intelligence agencies -- he decried in an e-mail "the barrage of libelous distortions of my record [that] would not cease upon my entry into office," and he was blunt about whom he considers responsible.

"The libels on me and their easily traceable email trails show conclusively that there is a powerful lobby determined to prevent any view other than its own from being aired, still less to factor in American understanding of trends and events in the Middle East," Freeman wrote.
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