A new book by 'New York Times' reporter Charlie Savage, 'Power Wars,' suggests that there has been little substantive difference between George W. Bush's administration and Obama's when it comes to national-security policies or the legal justifications used to pursue regime change in the Greater Middle East.

Most critical histories of U.S. involvement in Iran rightly began with the joint British-U.S. coup against democratically elected Prime Minister Mohammad Mosaddegh in 1953, which installed Pahlavi on the Peacock Throne. But it was Kissinger who, in 1972, greatly deepened the relationship between Washington and Tehran.

Harriet Washington, in 'Medical Apartheid: The Dark History of Medical Experimentation on Black Americans from Colonial Times to the Present,' documents the smallpox experiments Thomas Jefferson performed on his Monticello slaves. In fact, much of what we now think of as public health emerged from the slave system.