BERLIN (Reuters) – The G20 will struggle this year to reach an agreement on a final communique at its leaders’ summit in Bali and is still wrangling over lots of points, a German government official said on Wednesday. Work in the G20 has proven tricky this year due to Russia’s invasion of Ukraine – as underscored by the unprecedented lack of statements at ministerial meetings – but it remains a relevant forum, the official said. Berlin wants to avoid the building of factions at the summit and will measure the event’s success by bilateral talks as much as by a possible communique, the official …