"offensive war" is correct and usable in written English.
You can use it when you are referring to a military conflict initiated by one or more countries in order to take territory from one or more other countries. For example, "The United States declared an offensive war against Iraq in 2003."
As tensions deepen, hawkish Chinese military leaders are paving the way for offensive war.
TALK OF NEW NEGOTIATIONS Tewfik Rushdi, in Paris, Says Offensive War Is Unthinkable -- Tourists Avoid Iraq.
In its complaint about the exercises, the Pyongyang regime described them as offensive war games targeting North Korea.
He not only condemned offensive war but also led his followers to distant states to prevent the outbreak of wars by reinforcing the defending state.
He implied that the thinker who had most influenced his views was not his father, who categorically denounced "offensive war," but Ronald Reagan.
He said that Iran does not have the military ability at home to fight an aggressive offensive war against Israel from so far away.
Kitchener was in fact a child of Boot's first Industrial Revolution, a cousin to U. S. Grant and William Sherman, who waged offensive wars underwritten by strengths logistical as well as tactical.
Moving their scrap to the forums – the web equivalent of taking it outside – Fuller posted a reply, suggesting that Grayling has embarrassed himself with his "outdated and offensive wars against religion" that merely pander to secularist prejudice.
As well as trying to make a distinction between land grabs as an outcome of defensive and offensive wars Pompeo has pointed to ancient Jewish links with the area, and sought to make a virtue of acceptance of "facts on the ground".
Japan is not part of any regional military alliance such as NATO and is one the few sovereign states in the world that has renounced forever the right to conduct offensive wars.
That is why doctored intelligence and misinformation were needed to justify these offensive wars, from the Gulf of Tonkin to Saddam's "involvement" with 9/11.
