Even as Mexico continues to struggle with grave security threats, its steady rise is transforming the country's economy, society, and political system. Given the Mexico's bright future and the interests it shares with the United States in energy, manufacturing, and security, Washington needs to start seeing its southern neighbor as a partner instead of a problem.

Since 1988, Brazilians have cleared more than 153,000 square miles of Amazonian rain forest, devastating the environment and driving global climate change forward ever faster. Recently, however, Brazil has changed its course, reducing the rate of deforestation by 83 percent since 2004. At the same time, it has become a test case for a controversial international climate-change prevention strategy that places a monetary value on the carbon stored in forests.

The crisis of democracy identified in the 1970s never really went away; it was just papered over with temporary solutions and obscured by a series of lucky breaks.

Now, more than ever, the United States might be tempted to pull back from the world.

Republicans need to start taking foreign policy more seriously, thinking hard about the thorny task of managing a superpower and not leaving it as a plaything for right-wing interest groups. Failure to do so quickly could be catastrophic, ceding this ground to Democrats for the a generation at least.

The amount of resources the American public and private sectors commit to all forms of welfare is massive -- the fifth highest outlay in the world.

From the demise of the gold standard in the 1970s to the battle over financial reform today, Paul Volcker has helped shape U.S. economic policy for decades.

Richard A. Falkenrath says Showtime's blockbuster series Homeland is great television, but not a useful guide to real-world homeland security. Hint: we always tap the suspect's cell phone.

Rather than focus on dramatic raids and high-tech drone strikes, special operations should refocus its attention on working with and through non-U.S. partners to accomplish security objectives, says Linda Robinson.

Over the past several years, the most talked-about trend in the global economy has been the so-called rise of the rest, which saw the economies of many developing countries swiftly converging with those of their more developed peers.

Mexico has long been hostage to unchallengeable traditions: its nationalist approach to oil wealth, overly sensitive attitude toward sovereignty, entrenched labor monopolies, persistent corruption, and self-serving bureaucracy.

Today, 214,098 women serve in the U.S. military, representing 14.6 percent of total service members.

Over the next decade, the U.S. military will need to undertake the most dramatic shift in its strategy since the introduction of nuclear weapons more than 60 years ago.

For all the differences between Democrats and Republicans that were laid bare during the 2012 U.S. presidential campaign, the parties' standard-bearers, Barack Obama and Mitt Romney, do seem to have agreed on one thing: the importance of equal opportunity.

The argument of Thomas Ricks' new book, The Generals, is simple: since the end of World War II, the combat performance of the U.S. Army has been subpar, primarily because the highest-ranking generals have been reluctant to fire underperforming generals lower in the chain of command.

Every aspiring beauty-pageant queen knows what to say when asked what she wants most: "World peace." World peace is at least nominally what we all want most. But evidently, we are not very good at making it.

The War of 1812 gets no respect. It's easy to see why: the causes of the war are still subject to debate, and they were sometimes unclear even to the warring parties.

Andrea Campbell tips her hand partway through her essay "America the Undertaxed" (September/October 2012) when she writes that "the central debate in U.S. politics is whether to keep taxes, particularly federal taxes, at their current levels in the long term or emulate other advanced nations and raise them."

Graham Allison ("The Cuban Missile Crisis at 50," July/August 2012) seems to believe that U.S. President John F. Kennedy's handling of the Cuban missile crisis was an unalloyed success.

Pundits predicted that the U.S. Supreme Court's ruling on the Affordable Care Act would make history.