Germany’s Bundesbank remains an influential actor in eurozone policymaking, and its recent disagreements with the ECB raise concerns about managing the zone’s debt crisis. This Backgrounder explains.

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.

A profile of the chemical agent mustard gas.

The Arab world is watching nuclear developments in Iran closely. The outcome could disrupt the Middle East’s balance of power or, worse, provoke a regional nuclear arms race.

The looming expiration of U.S. fast-track trade promotion authority could trip up momentum toward trade liberalization, but experts say it won’t necessarily be a step backwards.