AceShowbiz -

Kim Kardashian is trying to protect her children North and Saint West from her "stressful" drama with Kanye West. The kids are the "Keeping Up with the Kardashians" star's biggest concern and number one priority.

"Kim is keeping the kids busy with family and healthy activities, hoping they will remain happy and entertained," reveals an insider, "North and her brother routinely go over to aunt Kourtney [Kardashian's] for play dates with Penelope and their other cousins."

The insider tells HollywoodLife.com, "She has North attending dance classes to distract her from the drama. Kim is extra careful when discussing adult issues with Kanye. She either makes sure this kids are out of the house, off doing fun activities, or at least not in the same room. She doesn't want her kids hearing any of her and Kanye's stressful discussion, which lately, there have been plenty of."

What will happen to North and Saint if their parents go their separate ways? According to a source, Kim won't keep them away from their father. "She will be filing for sole custody," the source told In Touch, "But she does want Kanye to be part of their lives."