Pre-emptive strike
Type your answer here... Germany did an unprovoked attack on Poland
An unprovoked attack by North Korea on South Korea in June 1950
I'd suggest there is no such thing as unprovoked. The attacker always responds to something he found offensive. In Japan's case, it was the oil embargo and an exaggerated sense of entitlement. Justification is the variable. It would be a foolish aggressor who telegraphed his intentions to attack, surprise being one of the most important aspects of engagement.
Both were subjected to unprovoked attack, The USSR by Germany and the US by Japan.
Us declare war on the Japenese? They attacked us! We merely defended ourselves against an unprovoked attack with a bang.
"Not prompted" and "unwarranted" are meanings of the word "unprovoked".Specifically, the word is formed by adding the negative prefix "-un" to the adjective "provoked", which forms from the past participle of the infinitive "to provoke". The resulting meaning serves to emphasize the lack of prior cause to an action, as in "The attack was unprovoked by border conflicts" and "The remote mountain community was unprepared to defend themselves against the valley residents' unprovoked attacks.
The dog attacked the mailman unprovoked, without any reason or warning.
The first attack, or act of hostility; the first act of injury, or first act leading to a war or a controversy; unprovoked attack; assault; as, a war of aggression. "Aggressions of power."
It depends what is meant by "unprovoked". An emu always has a reason for whatever it does, and what may seem unprovoked to humans is not necessarily so to emus. An emu will only attack if it believes there is a threat to its chicks or itself, so stories of "unprovoked attacks" on cars or people are probably inflated. For whatever reason, the emu in question was feeling threatened at the time.
aggression
'Ambush' is one possible answer.
only if it is provoked. it has been known to attack unprovoked but that is in a rare occasion
December 7, 1941. It it wasn't much of a battle. It was an unprovoked attack.
An unprovoked attack by North Korea on South Korea in June 1950
Type your answer here... Germany did an unprovoked attack on Poland
The unprovoked attack by the Japanese on Pearl Harbour
the word means an attack or harmful action, esp unprovoked attack by one country by an other......................... hope dat helped :-)