The NSDC Secretary Oleksandr Danylyuk has wrote a letter of resignation.
"I confirm the information regarding my resignation. I stay at work until the President decides", - he wrote on Facebook.
The President's Office also confirmed this information. "Oleksandr Danylyuk wrote a corresponding statement to the President of Ukraine before the start of a working visit of Volodymyr Zelensky to the USA to participate in the 74th session of the UN General Assembly. The president will consider it upon his return to Kyiv", - the message said on Facebook.
Danylyuk was appointed Secretary of the NSDC on May 22 by the presidential decree.