Is armament considered an aggression in international law?

I have read many articles claiming the armament of Ukraine or other post-Soviet states to consist an act of aggression vs. Russia.

However the UN charta gives the following definition of aggression:

"Aggression is the use of armed force by a State against the sovereignty, territorial integrity or political independence of another State, or in any other manner inconsistent with the Charter of the United Nations, as set out in this Definition."

Is this definition outdated? Where can I find the most recent definition of aggression?

Aggression as defined by UN charta