Some NATO troops have been deployed in Ukraine, and the alliance is assisting Kiev as much as it can, Polish Prime Minister Donald Tusk said on Thursday.
"NATO today is helping as much as it can. As much as it can. Without NATO's help, Ukraine would not have been able to defend itself for so long. Well, and there are some troops there, I mean soldiers. There are some soldiers there. Observers, engineers," Tusk told reporters.
The prime minister did not specify details on the number of troops or their countries of origin.
In his annual address to the Russian Federal Assembly in late February, President Vladimir Putin warned that the consequences of a possible NATO intervention in Ukraine would be tragic for the alliance's deployed troops.