The term 'external aggression' is correct and usable in written English.
You can use the term to describe threats to a nation from outside, such as military action against one nation from another. For example, "The nation was forced to respond to external aggression with military force."
The government had insisted that it would never use chemical weapons against its own people, only to repel external aggression.
"The United States shall regard with grave concern any external aggression or threat of external aggression against the sovereignty, independence, and territorial integrity of Afghanistan," the proposed agreement states.
We will confront external aggression against our allies and partners, as we did in the Gulf War.
"There is a clear policy in the legislation that arms should only be sold to countries for defensive purposes and not for internal suppression or external aggression.
Having helped Iraqis establish a new government, coalition military forces will help Iraqis to protect their government from external aggression and internal subversion.
Each of those regimes combined ruthless internal control, a willingness to engage in external aggression, and fervent adherence to an extreme ideology.
It will be on the bill to permanently guarantee that Congress will have no economic leverage to restrain China's internal repression of dissidents or external aggression against Taiwan.
The two parts have also traditionally been united against external aggression, and have had to coöperate to promote the economic well-being of their citizens.
No one in Russia defends ethnic cleansing, but it is obvious to all that external aggression can only make it worse.
The govt. insists that the war is a case of external aggression -that S. Africa, its powerful white-ruled neighbor, is using Renamo as a proxy force.
Some have interpreted the study to mean the Chinese government is likely to be tempted to resort to external aggression to pacify its restive population.
