which country wanted to punish Serbia for encouraging terrorism within its borders?
The country that wanted to punish Serbia for encouraging terrorism within its borders is Kosovo.
The country that wanted to punish Serbia for encouraging terrorism within its borders was NATO (the North Atlantic Treaty Organization) during the Kosovo War in 1999. NATO launched a military campaign against Serbia to stop the conflict and prevent further human rights abuses in Kosovo.
To find the answer to this question, you could have started by researching historical events related to Serbia and terrorism. Specifically, the Kosovo War is a well-known conflict involving Serbia, NATO, and terrorism. By searching for information about the Kosovo War, you would have discovered that NATO intervened to punish Serbia for its alleged support of terrorism in Kosovo.