Obama, più Carter che Truman.

Mr. Obama exhibits both the initial inexperience—and some of the naïveté—of Harry Truman when he took office. He has framed the challenge of radical Islam largely in terms of what a contrite America must do to apologize to the Muslim world, instead of addressing endemic religious intolerance, autocracy, statist economies, tribalism and gender apartheid that help fuel extremism.
The Obama administration reaches out to enemies such as Mahmoud Ahmadinejad, Bashar al Assad, the Castro brothers and Hugo Chávez. It pays far less attention to British, Colombian, French, Israeli and Japanese allies. In unilateral fashion we withdrew promises of land-based antiballistic missile defense from Eastern Europe, giddy that we might appease the Russians into abrogating their patronage of Iran's nuclear ambitions.

Will an inexperienced Barack Obama, in the fashion of Harry Truman, learn quickly that the world is chaotic and unstable—best dealt with through strength and unabashed confidence in America's historic role galvanizing democratic allies to confront illiberal aggressors?
Or will a sermonizing Mr. Obama follow the aberrant Democratic path of the sanctimonious Jimmy Carter: finger-wagging at allies, appeasing enemies, publicly faulting his less than perfect predecessors, and hectoring the American people to evolve beyond their supposed prejudices?
America awaits the president's choice. The world's safety hinges upon it.

(Truman and the Principles of U.S. Foreign Policy)