The reason for the dissatisfaction of the UN Secretary General is not named in this document. Guterres had been on the road for weeks, and a trip to Kiev would have required an 11-hour flight.
The reason for his dissatisfaction is not known, but it is believed to be related to his recent trip to the Middle East. The UN Secretary-General is expected to return to the United States in the next few days for a meeting with President Barack Obama, who is in Washington for the G20 summit.