Five global think tank leaders examine the increasingly complex global challenges and the role of the international community in confronting them.

In his address to the nation on Tuesday, U.S. President Barack Obama laid out a strategy he says will turn the tides in the faltering Afghan war effort. Five experts analyze his approach.

The U.S.-China summit comes amid tensions over cybersecurity and regional disputes and crucial questions about economic policy. Five experts weigh in on how to manage the relationship.

Four experts debate whether Obama’s immigration reform plan, including an expanded path to legalization, would help or harm U.S. workers and economic growth.  

Upcoming negotiations are shadowed by Iran’s increasing uranium enrichment capabilities. Four nonproliferation experts provide a path for resolving the intensifying nuclear dispute.