Kylie Jenner and Blac Chyna's war came to an end when big sis Kim Kardashian stepped in to play peacemaker.
Sources close to Blac Chyna tell TMZ she got a call from Kim several weeks ago to hash out the drama over her and Rob Kardashian's engagement. Chyna obliged and went to Kim's pad for the sit-down.
We're told they both agreed there was no reason for family beef over Rob and Chyna getting hitched -- since the more important point was Rob being happy, and getting out of the house again.
The peace summit also covered Tyga -- y'know, the fact he's dating Kylie and is also Chyna's baby daddy. We're told Kim made it clear the time was right for the ladies to chat.
A few days later Kylie and Chyna talked on the phone, which led to Thursday's face-swapping Snapchat session -- and an agreement to squash all beef.
Kim K. Just like Jimmy Carter ... with way more ass.