act of war

noun

1. an act of aggression by a country against another with which it is nominally at peace.

act of war

noun

1. an aggressive act, usually employing military force, which constitutes an immediate threat to peace

Example Sentences

That is a blatant act of war, but no one today is worried about that.

From Salon

A former counter terrorism chief has described how he initially wondered if the poisoning of a former spy and his daughter could have been "an act of war".

From BBC

At the time, Musk said Ukraine’s “obvious intent” was to sink Russia’s Black Sea Fleet, which would have made Starlink’s parent company, the U.S. defense contractor SpaceX, “explicitly complicit in a major act of war and conflict escalation.”

From Salon

In a post on X, Musk said there was a request from Ukraine to activate Starlink services with the intent to sink a Russian fleet, but that he did not agree to it because Starlink would then be “explicitly complicit in a major act of war and conflict escalation.”

From Los Angeles Times

But President Ferdinand Marcos Jr has warned that any Filipino deaths resulting from China's actions would be considered an "act of war".

From BBC