Problems include discord over a banking union, Spains foot-dragging and Greeces debate on meeting bailout terms.

German court decision, Greek infighting could derail ECBs bid to resolve crisis.

German court decision, Greek infighting could derail ECBs bid to resolve crisis.

German chancellor says efforts to resolve Europes debt crisis are at decisive phase.

German chancellor says efforts to resolve Europes debt crisis are at decisive phase.

German chancellor cites commitment to doing everything possible to maintain common currency.

German chancellor cites commitment to doing everything possible to maintain common currency.

German Chancellor Merkel returns from vacation to the continued debate over measures to resolve debt crisis.