Explainers

Backgrounders

Authoritative, accessible, and regularly updated primers on hundreds of foreign policy topics.

Taiwan

Why China-Taiwan Relations Are So Tense

Differences over Taiwan’s status have fueled rising tensions between the island and mainland. Taiwan is the likeliest potential flash point in U.S.-China relations.

Energy and Environment

How the U.S. Oil and Gas Industry Works

The United States is the world’s top producer of oil and natural gas. Its decision to either continue at this pace or curb production to achieve its climate goals will have global consequences.

Explainers Video Filters and Cards

G20 (Group of Twenty)
What Does the G20 Do?
The Group of Twenty, an informal gathering of many of the world’s largest economies, is the premier global forum for discussing international economic issues. Its 2025 summit marks the first time the forum is hosted in Africa, but questions loom about the group’s continued relevance. 
Climate Change
Paris to Kyoto: The History of UN Climate Agreements
International efforts, such as the Paris Agreement, aim to reduce greenhouse gas emissions. But experts say countries aren’t doing enough to limit dangerous global warming.
Haiti
Haiti’s Troubled Path to Development
Hobbled by foreign interventions, political instability, and natural disasters, the former French colony remains paralyzed by multiple crises and a deepening humanitarian disaster.
Refugees and Displaced Persons
How Does the U.S. Refugee System Work?
The United States has long been considered a safe haven for refugees from around the world, but this could change in light of the Trump administration’s efforts to reshape the country’s decades-old refugee resettlement program.
Trade
The U.S.-China Trade Relationship
President Donald Trump’s trade war with China that began in his first administration has created ripple effects throughout the global economy. But experts say complete decoupling of the world’s two biggest economies is likely impossible.
Public Health Threats and Pandemics
Fentanyl and the U.S. Opioid Epidemic
Opioid addiction has become one of the United States’ biggest killers, endangering public health, the economy, and national security. But closing the floodgates on fentanyl poses a significant foreign policy challenge.
Southeast Asia
What Is ASEAN?
The Association of Southeast Asian Nations is a regional organization that brings together disparate neighbors to address economic and security issues, but the group’s impact remains limited.
Argentina
Argentina’s Struggle for Stability
Argentina has struggled with political dysfunction and financial crises for decades. How is the country faring under firebrand President Javier Milei?
Canada
What Is Canada’s Immigration Policy?
With its relatively open and well-regulated immigration system, Canada remains a top destination for immigrants and refugees. Recently, however, the government has cut back on admissions over growing concerns about strains on housing, infrastructure, and social services.
United States
U.S. Gun Policy: Global Comparisons
While U.S. gun deaths have fallen from an all-time high in 2021, the persistent death toll continues to provoke intense domestic and international scrutiny of the United States’ gun laws, which have much fewer controls than those of other advanced democracies.
Palestinian Territories
What Is Hamas?
The Palestinian militant group struggled to govern the Gaza Strip before launching a surprise attack on Israel in 2023. Now facing Israel’s military campaign to destroy it, Hamas’s future is in doubt, as is Gaza’s.
China
China’s Repression of Uyghurs in Xinjiang
More than a million Muslims have been arbitrarily detained in China’s Xinjiang region. The reeducation camps are just one part of the government’s crackdown on Uyghurs.
Sub-Saharan Africa
AGOA: The U.S.-Africa Trade Program
U.S. trade with sub-Saharan Africa has plateaued in recent years, prompting analysts to question the effectiveness of a preferential trade program for the region.
United States
What Does the U.S. National Guard Do?
The National Guard is a special part of the U.S. military that answers to both state governors and the president. While it began as a “strategic reserve,” the guard has come to play an important role in domestic and overseas operations.
United Nations
What Is the UN General Assembly?
Each year, the General Assembly hosts a much-watched debate of world leaders. The 2025 meeting focused on climate change, artificial intelligence governance, UN reform, and the ongoing wars in the Gaza Strip and Ukraine.