SIBIU, Romania (Reuters) - Fighting climate change, safeguarding the rule of law and finding a modern model for growth must be at the heart of the European Union, the bloc's leaders agreed in Thursday talks meant to show unity despite the damage from Brexit.

However, their informal gathering in the Romanian town of Sibiu did not produce clear decisions on how to achieve the ambitious goals, underscoring divisions in the EU along multiple fault lines and setting up battles ahead.