I strongly felt and still feel that the Ukrainian leaders should have opted for nonviolence so as to minimize casualties, and then worked with noncooperation or limited cooperation. I find these approaches more compatible with the Gospel.
I am glad that you had voiced such thoughts.
Yes, a leaders first duty is to protect his people and nation . I find even the bloodshed of a single person through injury inexcusable due to this war.
Ukrainian leadership could have opted for a middle path which would have enabled them to get the friendly alliance of both U.S - western europe as well as their neighbor Russia with whom they have economic and industrial partnerships.
They could have even backed off from Nato when Russia showed its preparations for war, and display non-alignment in a tactful and diplomatic manner . This could have prevented the war and bloodshed, refugee crisis and heavy inflation rates the world is witnessing at present.
In the second world war, switzerland and spain escaped much of the damage and destruction suffered by the rest of europe by being neutral and nonaligned.