Secretary of State Hillary Clinton, a senator and former First Lady, has offered a tough pragmatism on national security matters and called for reviving U.S. credibility in the world.

The G20 meetings in Toronto will be marked by competing agendas on global growth and financial regulations. This Backgrounder looks at the range of policy concerns.

As the United States looks to reform its health care system and expand access to the uninsured, countries that have moved toward universal health care may offer lessons.

President Barack Obama says he will seek vigorous climate-change policy. Efforts to curb greenhouse gases pose considerable economic pitfalls, as well as opportunities.

China’s growing military capabilities pose a concern for U.S. security interests. Experts say the United States must push for greater engagement with China’s military to reduce the potential for misu…