I am so sorry to hear about what you are going through and I feel it must be particularly hard to be facing this alone since you are new here and don't know anyone yet.
Thank you for posting and welcome to the forums.
I do know someone who is going through a similar situation and it is so hard and heartbreaking. This person has older kids who have managed to be manipulated by their father and they have cut this poor mother off. Although there is no order out against anyone, it is still messy and the children are not making contact, there's also much bad talking going on and head filling with lies.
I think you would benefit by first of all taking some quiet time, by that I mean not saying anything to your wife until things start to cool down and maybe she will want to make contact when she sees that she is being manipulated and it's hard to lose the freedom you had when you're living with your parents.
If she doesn't make contact, try to reason with her so you can see the kids, more importantly if it is not repairable then you really do need to get some legal advice,
I am so sorry if this all sounds so harsh but it seems like the parents have been able to get a pretty strong hold on her. Do you have any friends overseas that you can talk to and they may talk to her also? Perhaps they can try to reason with her on your behalf?
Try as much as you can to remain the better person with the good logic because if this inevitably continues to legal proceedings then the judge will consider your actions as being part of your good character.
I hope it doesn't get to this stage and that you can find a way to try to speak to her, but meanwhile you need to look after yourself too because this is stressful. Take time out for yourself as well and really think about things so that you can react sensibly void of intense emotion.
hang in there.