Well Sanatana Dharm or Eternal Law will hold till the end of the universe and then back again....its Kaliyuga which states
Hindus believe that human civilization degenerates spiritually during the Kali Yuga,[4] which is referred to as the Dark Age because in it people are as far removed as possible from God.
In relation to rulers
* Rulers will become unreasonable: they will levy taxes unfairly.
* Rulers will no longer see it as their duty to promote spirituality, or to protect their subjects: they will become a danger to the world.
* People will start migrating, seeking countries where wheat and barley form the staple food source.
[edit] In human relationships
* Avarice and wrath will be common. Humans will openly display animosity towards each other.
* Ignorance of dharma will occur.
* People will have thoughts of murder with no justification and will see nothing wrong in that.
* Lust will be viewed as socially acceptable and sexual intercourse will be seen as the central requirement of life.
* Sin will increase exponentially, whilst virtue will fade and cease to flourish.
* People will take vows and break them soon after.
* People will become addicted to intoxicating drinks and drugs.
* Men will find their jobs stressful and will go to retreats to escape their work.
* Gurus will no longer be respected and their students will attempt to injure them. Their teachings will be insulted, and followers of Kama will wrest control of the mind from all human beings. Brahmins will not be learned or honoured, Kshatriyas will not be brave, Vaishyas will not be just in their dealings and Shudras will not be honest and humble in their duties and to the other castes.