BRUSSELS, May 13 - European Union officials are calling for a stronger response by the bloc to Russian aggression toward Ukraine, warning that Moscow’s ultimate aim is to absorb parts of eastern Ukraine where a war has raged for seven years.

The warnings came in a report written by the EU’s diplomatic office that was circulated earlier this week among EU members and reviewed by RFE/RL.

Since erupting in 2014, the conflict pitting Kremlin-backed militias and Ukrainian government troops has killed more than 13,000 people and displaced more than 1 million. Fighting has ebbed and flowed, though last month tensions skyrocketed after Russia deployed more than 100,000 troops and heavy weaponry to its regions bordering Ukraine.