One-year-old twins who were born conjoined at the back of the head in Israel have now been successfully separated. Following the 12-hour surgery, both girls were able to see each other for the very first time—and the heartwarming moment was captured on video.

Their surgery marks the first time a separation surgery for conjoined twins was performed in Israel. Doctors involved in the surgery estimate that this particular operation has only been performed about 20 times around the world.

"Whenever you have two babies attached together with their brains and the vessels supplying the brains, it makes it even more complex and impossible for us neurosurgeons to expect and to know how to deal with it," Mickey Gideon, director of pediatric neurosurgery at Soroka Medical Center who led the surgery, told NBC News.

In the photos and the video of the girls, whose names have not yet been released, show them facing one another while lying in their hospital crib—just taking in the sight of their sister for the first time.