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Germany's Merkel presses Putin to do more to help calm situation in Ukraine, enable election

German Chancellor Angela Merkel, right, smiles as President of France Francois Hollande, center, gives an autograph to 6 years old tourist Hanna during a visit of the Baltic see island Ruegen, northern Germany, Friday, May 9, 2014. Merkel and Hollande meet for two days on the island Ruegen and in the coastal city of Stralsund. (AP Photo/Michael Sohn)

German Chancellor Angela Merkel, right, smiles as President of France Francois Hollande, center, gives an autograph to 6 years old tourist Hanna during a visit of the Baltic see island Ruegen, northern Germany, Friday, May 9, 2014. Merkel and Hollande meet for two days on the island Ruegen and in the coastal city of Stralsund. (AP Photo/Michael Sohn)  (The Associated Press)

German Chancellor Angela Merkel says Russian President Vladimir Putin must send more "signals of de-escalation" to help calm the situation in Ukraine and make presidential elections there possible on May 25.

Merkel spoke Saturday after meeting French President Francois Hollande in her constituency in northeastern Germany. The two leaders stressed their view that a sovereignty referendum planned Sunday by pro-Russian insurgents in two troubled eastern Ukrainian regions is illegitimate.

The rebels are going ahead with the referendum despite Putin's call on Wednesday to delay the vote.

Merkel said: "The Russian president must send more signals of de-escalation" so the presidential elections can go ahead.

Merkel said she would like to see a "national dialogue" in Ukraine start next week if possible, but didn't specify who should participate.