In the realm of warfare, a Cold War may inflict a greater degree of damage more than open warfare. The problem with a cold war is that you may not know what the real issues are and how they could be resolved. In open warfare, you know your enemies and the reason for the conflict.
Communication, of course, is important. This would help in ensuring that the issues are brought out into the open and resolve appropriately. With open and honest communication, both spouse could address their issues and work their ways toward solving their issues. Relationships are built upon trust and trust cannot be built without open and honest communication. If you have this, you won’t need to worry about a cold war between you and your spouse.