+1  | 
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						Maybe I am in the minority but given my relationship with my brother I would absolutely speak to him in private about it and gauge what he thinks. Maybe his new wife is dying to go see her family or whatnot. 
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 Look at it this way. Having three children, a nasty divorce and then marrying another woman with kids is going to harm/be painful to your original kids. It just is. They may learn to tolerate it and accept it but it’s another loss for them. It also creates complications with holidays and a host of other extended family stuff. Anyone who goes into these relationships expecting anything else is either a naive fool or self absorbed person. He chose to enter into this complicated situation. The rest of the family did not so he needs to sit this holiday out. He can go to his new wife’s family gathering or they can have a small one at home. This is neither the time or place fr everyone to get to know his new family.  | 
| Everyone is invited. If you don’t want to go, then make other plans. Invite Dad to lunch a different day. | 
						
 Huh? No. Not her issue, as none of the kids are minors.  | 
							
						
 Not really. There may be hard feelings but suggesting OP’s parents should exclude their own son and his wife under the fact pattern is just absurd. Some people seem to be projecting here. They should invite everyone and set the tone that this will be a happy, inclusive holiday gathering. If it fails, it fails, but taking sides against their own son where no facts suggest wrongdoing on his part other than remarrying is not an option.  | 
| Brother's kids do not get to dictate who attends what. They can just decline to attend. How old are they. Actually it doesn't matter. | 
							
						
 +2  | 
| Brother should ask himself "Does my extended family actually want me to show up with a total of six (or more?) people who do not get along with each other?" | 
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						This happened to my family; my grandparents chose their son (over their grandchildren, who, like your nieces and nephews, refused to engage if the new family were included). The outcome is that we lost contact with treasured cousins, and I'm still sad about it. 
 It's important to find ways to support both your brother and his estranged children. Be very careful not to alienate the kids, if you value any future relationship with them.  | 
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						I am close with my brother so I’d talk to him.  Maybe they have an invite with his new wife’s family.  If the divorce was only five years ago and he’s already fully blended in with his jew family that would suggest that the new step-mom may have been an AP.  That changes the whole thing.
 I hope the kids can get together with their moms family because the whole situation is sad.  | 
| Invite the ex-wife so the kids have someone on their side. Let the new wife stay home if she's uncomfortable with that since everyone is family. | 
						
 Where did anyone say the kids were estranged???  | 
						
 No!  | 
							
						
 There is more to this story that you are not hearing about or from the Brother.  |