We're hearing a little from NATO chief Mark Rutte now, who is visiting Kyiv and has been addressing Ukraine's parliament this morning.
The secretary-general of the alliance warned that reaching a peace deal to end the conflict will require tough choices.
It comes on the eve of a second round of trilateral peace talks between US, Ukrainian and Russian delegations in Abu Dhabi.
The first round of talks last month were said to be constructive, but key issues still remain, including the question of who keeps Ukrainian land currently occupied by Russian forces.
The talks were due to be held at the weekend, but Volodymyr Zelenskyy announced on Sunday that they would be delayed. He said his country was ready for a "substantive discussion".