The way that Soviet intelligence tried to reshape the balance of power in the Middle East is essential to understand the developments that led to the outbreak of the Six-Day War.

Every intelligence operation carries risks.

In practical terms, Israel has become the eyes and ears of the United States in the Middle East. This arrangement has freed the United States from a heavy intelligence-gathering burden. But it has also forced the Americans to depend upon the Israelis.

If Israeli intelligence that has been shared with the United States - whether the National Security Agency, the C.I.A., the Defense Department, or the White House - is not safely guarded, Israel faces a major threat to its security. Cooperation with America's agencies is deeply embedded in Israel's intelligence community.

The Vietnam War required us to emphasize the national interest rather than abstract principles. What President Nixon and I tried to do was unnatural. And that is why we didn't make it.

When I was a kid, my favorite movies were the George Pal version of 'War Of The Worlds,' 'Them,' and 'Invasion of the Body Snatchers.' Those movies were scary! They haunted my nightmares for years, so when I started writing, I wanted to write a story that was just as big and just as scary.

There was one thing more than any other that turned this New York, liberal, Jewish, Columbia University graduate student away from modern liberalism: its use of moral equivalence to avoid confronting evil during the Cold War.

Ms. Clinton, like the Obama administration more broadly, believes that appeasing Islamists... promotes peace and stability.