We all have some basic obligation to one another.

A China that trades extensively with the U.S. and its Asian neighbors will think twice before it pursues any policy that would place those relationships at risk. Likewise, trade between India and Pakistan could contribute to the normalization of ties between these long-estranged neighbors.

To be sure, many of the Sykes-Picot borders reflected deals cut in Europe rather than local demographic or historical realities. But that hardly makes the Middle East unique: Most borders around the world owe their legacy less to thoughtful design or popular choice than to some mixture of violence, ambition, geography, and chance.

Wars of necessity are essentially unavoidable. They involve the most important national interests, a lack of promising alternatives to the use of force, and a certain and considerable price to be paid if the status quo is allowed to stand. Examples include World War II and the Korean War.

Difficult choices, unlike red wine, rarely improve with age.

Dissent is difficult. It can constitute a real dilemma for the person who disagrees.

Europeans must shed their illusions about what they can accomplish in the world on their own. Loose talk about resurrecting a multi-polar world is just that - loose talk.

It is difficult to think of a foreign policy issue that preoccupies and polarizes world opinion as much as the Palestinian question.

I believe in diplomacy; I don't believe in talking to... that talking to Iran somehow constitutes a concession or a favour.

Nationalism is a tool increasingly used by leaders to bolster their authority, especially amid difficult economic and political conditions.

Good people cannot fully compensate for bad process, but they can mitigate some of its worst tendencies.

When Barack Obama was running for president, he committed to leading the United Nations and other countries towards a common global goal. Obama believed that he could speak to allies and dictators directly and charm them into seeing the error of their ways.

Voters should absolutely know that a future president has the instincts to react to real-life and unrehearsed situations.

Since the fright of breast cancer hit our family, I have been surprised by how many people are dealing with breast cancer in their own family or with a loved one. One friend bluntly told me that she has been through it with her sister, her mom, and her grandmother, and all are healthy and mentally stronger because of the disease.

No American ambassador has produced more Security Council Resolutions on the issue of Iran than John Bolton.

President Obama believes getting along is more valuable than standing firm for U.S. interests.

As president, Governor Romney would handle the Syrian conflict much differently. A President Romney would not ignore a growing conflict in a dangerous region involving allies the way Obama has, especially when chemical weapons could possibly be used.

It is hard to know exactly when the Arab Spring, a phrase used to describe the beginning of the Arab peoples' demand for democracy and human-rights reform, started.

Hillary Clinton and Donald Trump have deep ties to corporate money. They both have a detailed and complexed view of how some on Wall Street manipulate the game. They know where the excesses are and who is to blame. If willing to take on their friends, they both could reform Wall Street from the inside.

In the past, liberals have competed to see who could shout the loudest to shut down the banks, ridicule success, and penalize anyone working in finance. In fact, the Occupy Wall Street movement was an aggressive liberal effort to shut down Wall Street banks.

Wall Street, like every industry, has good and bad players.

Boko Haram has pledged its allegiance and support to ISIS. The Northern Nigerian-based Islamic terrorist group wants Sharia law throughout Nigeria and beyond.

Maybe Hillary Clinton was right in 2008 when she called Barack Obama 'naive' on foreign policy.

The Russian propaganda machine, even in the U.S., is not to be discounted.