Jihaad and Slaves

Q:

1. When will Jihaad be “Fardh Ayn”(obligatory on every Muslim)?

2. What is the meaning of “Fardh Ayn”?

3. What is the purpose of Jihaad?

Q: I am a reverted Muslim from Hinduism from India. One thing is confusing me, but I am not finding any suitable person to analyse the answer properly. So, I thought to ask online to know the answer from salafi scholars.

My question is regarding the attacking of non-muslim countries and other things. As per salafi explanation I have come to know that the ruler of the country either Muslim or non-muslim cannot be attacked as a citizen of that country. And also I heard that the common non-muslim people should not be attacked both at their worshipping temple and outside worshipping places.

So first question is - when the Muslim rulers attacked India and some of them destroyed temples of Hindu people, how much it is allowed according to Islam? I mean to say, does Islam allow to attack and destroy the worshipping places and idols of the non-muslims in public places? If it is so, then how it is logical to say that non-muslim govt. should be tolerated?

My second question is - if any non-muslim country is attacked, then slaves can be got from the fight. In this present situation of today's time, how much it is justified as muslim nation to attack any non-muslim nation, capture people and make them slaves? Is it necessary to make free people slaves? Actually this question I am asking, because Islam has not stopped slavery by the process of war. We know that slavery in Islam is not because of inspiring slavery, but to remove slavery from society fully from society in a gradual way. But sometimes I have faced this question that on the context of the present world, if any non-muslim country is attacked by any muslim country, then how much it will be justified to make the non-muslim educated captured people specially women as slaves?

My last question is, does islam permit a non-muslim to build his temple in public in any islamic country?

Q: If someone is ordered to spy on the Muslims to help the disbelievers and he is threatened that if the doesn’t do it he or his family will be killed, will he be out of Islam if he complies?

Q: These are the few questions I have in mind:

1. Why does Islam have the concept of Jihad? Is it necessary?

2. Are Islamic Laws compatible in today’s world? Why?

3. Does Islam disrespect women?

Q: Can you please provide some information on mulk Al yameen?

Q: Is slavery allowed in Islam?

Q: In the laws of slavery, a man could enjoy relations with his slave. What would happen in the case of both a mother and daughter being his slave?

Q: Is jihaad in Shaam fardul ayn at the moment or not? If it is not, please state why. I am a darul uloom student, so I would appreciate a detailed response.

Q: It is permissible for mature Muslims from anywhere in the world to join the طالبان even if parents don't agree? What about Syrian or Palestinian or Kashmiri causes.

Q: Is Jihaad (qitaal) fardh nowadays?