Ukrainian President Volodymyr Zelensky has once again slammed NATO over Kyiv's application to join the alliance. Zelensky has now set conditions for attending the upcoming NATO summit. Zelensky's office said the President won't attend the NATO Summit if its leaders "lack courage". Ukraine is seeking an invitation next month to begin the process of joining NATO. However, the Western allies remain divided over how fast Ukraine should join the alliance. Watch this video for details.