BERLIN (Reuters) - There are still many difficult issues to be resolved ahead of a summit of the Group of 20 leading economies (G20) in Hamburg later this week, a German government spokesman said on Monday.

 

"Tomorrow the final sherpa round starts and without going into details here, I can say that there are still a lot of difficult questions pending," spokesman Steffen Seibert told a news conference.

 

(Reporting by Paul Carrel; Writing by Michelle Martin)