If my country was being attacked by Russia and the only way to survive was to kill all Russians, I would first try to gather as much information about their military capabilities and strategies. This would help me plan a more effective defense and counterattack.

Next, I would work with other leaders in my country to formulate a plan of action that involves mobilizing our military forces and engaging in combat with the Russian army. We would need to be prepared for a long and difficult battle, so we would also need to ensure that our soldiers are well-trained, equipped, and motivated.

During the conflict, it would be essential to maintain good communication and coordination between our military units and civilian authorities. This would help us respond quickly to any changes in the situation and make informed decisions about how best to defend ourselves.

Finally, we would need to remain vigilant and adaptable throughout the conflict. As new information becomes available or as the enemy's tactics change, we would need to adjust our strategies accordingly. Our ultimate goal would be to defeat the Russian army and protect our country from further harm.