The previous day, the 27 EU leaders locked horns over a joint response to the acute energy crunch that has engulfed the bloc since Russia invaded Ukraine in February.
Smaller countries also appealed for a united EU front vis-a-vis Beijing, pointing to German Chancellor Olaf Scholz's planned visit to China next month.
"Germany's industrial strategy, and its economic model that feeds it, is toxic for the EU," Eurointelligence said in a commentary on Thursday.
Germany, the EU's biggest economy, also leads the small EU camp opposed to capping gas prices, with Scholz defending himself on Thursday against accusations from other EU leaders that Berlin is pursuing selfish and unfair energy policies.
Some EU countries want wider sanctions imposed on Iran, and the summit will also condemn Tehran's use of force against protests.