The conversation between Francois Hollande, Angela Merkel, Vladimir Putin and Petro Poroshenko - the first since April 30 - lasted for more than two hours and focused on finally halting the 15-month crisis in the Donbas.
The warring sides had struck a ceasefire deal in February but Poroshenko on Friday complained about pro-Russian militants' refusal to honour the five-month truce. The Minsk agreements calls for the entire peace process - including full disarmament and the return of Kyiv's control over its Russian border - should be competed by the end of the year.
Poroshenko held phone conversation with Merkel, Hollande and Putin
Petro Poroshenko expressed concern about the continuing escalation of violence in eastern Ukraine and called for the full implementation of the Minsk agreements.
Francois Hollande praised Poroshenko's constitutional proposals as a positive first step that should lead to the staging of local elections in terrorists-run regions later this year.
"Local elections held under Ukrainian law and with respect for the corresponding commitments will be an important milestone," the French president's office said.