President Donald Trump is"extremely frustrated" with both Kyiv and Moscow as efforts to negotiate an end to the nearly four-year war stall, White House spokeswoman Karoline Leavitt said on Thursday. While the US pushes for action, Russia said Friday it destroyed 90 Ukrainian drones overnight, with seven people injured in Tver. Follow our liveblog for the latest developments.

Yesterday's key developments:

• Ukraine has submitted a detailed counterproposal to the US peace plan, taking time to carefully review and refine their response.
• The International Olympic Committee (IOC) urged sports bodies to fully reintegrate Russian and Belarusian athletes into junior competitions and allow them to compete with their national flag and anthem.
• The US is pushing for a demilitarised"free economic zone" between Russian and Ukrainian troops in the east of the country as part of a settlement to end the war, Ukrainian President Volodymyr Zelensky said Thursday.