You are using the word technically wrong. Whether a country is at war or not is not a technical matter, it is dependent on the facts on the ground. A war is an intense armed conflict, usually between states. Just as the US did not declare war after WWII, they have not had problems calling Russia's invasion of Ukraine a war, despite Russian statements it is just a special military operation. We all know it is a war, just like that the US has been involved in multiple wars after WWII.