Very easy for somebody to take countries against a player that isn't active and hasn't bought war protection if they don't want the risk of losing their country or countries till they're next online. However the game mechanics needs to consider the following - that they somehow incorporate something where the actual real life timezones are taken into account to protect players. For example it's now 9.55pm here in the UK, but in certain American States it would be 4.55pm so people wouldn't be back online until they get in from work, and in Honolulu, Hawaii it would be 11.55am Wednesday morning, and in Wellington Auckland it would be 9.55am Thursday morning.