Issac, as a temporary replacement for Aurellia, who was resting, immediately handed down orders to tighten border security in all corners of the North, South, East, and West to prepare for the upcoming war.
He was not naive to think he would only launch attacks from one direction. He didn't know, but he had a hunch that the Garlin kingdom cooperated with the Moskov empire on this.
There isn't any information about that. But considering his experience fighting with the Garlin kingdom, he understood that such a possibility was quite high.
Threats from the west too. After taking the territory of the Grand Aria empire, the Heinz kingdom has to deal with the Marquis Baldwin faction that the Moskov empire has always supported.
When the eastern region of the empire became part of the kingdom, they took no action. They didn't have enough troops to send there. But if the help from the Moskov empire flows, that's a different story.