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.

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.