A tweet from the former NATO chief who has recently been appointed as an adviser to Poroshenko:
Here are some more details of Poroshenko's presser in Kyiv (from RFE/RL's news desk):
Ukraine’s Poroshenko Condemns Leak Of Journalist Data, Calls For Probe
President Petro Poroshenko has condemned the leaking of personal information concerning thousands of journalists who have reported from separatist-controlled parts of eastern Ukraine.
Last month, a Kyiv-based website revealed the names and contact information of more than 4,000 journalists, who it said were illegally accredited by Russia-backed separatists.
Poroshenko told a news conference in Kyiv on June 3 that the publication was a "big mistake" and called for an investigation into the leak.
But he also called on journalists not to write "negative articles" about the country and said some Russian reporters from the lists had produced items that were "criminal."
Poroshenko also ruled out elections in rebel-held areas in the Donetsk and Luhansk regions until there is "a mechanism to restore the Ukrainian sovereignty" there.
Fighting between government forces and Russia-backed separatists in eastern Ukraine has killed more than 9,300 people since April 2014.