Fallen IDF soldier Hadar Goldin.

Tuesday marked the third anniversary of the death of Lt. Hadar Goldin — an IDF soldier who fell in battle in the Gaza Strip during Operation Protective Edge and whose body was kidnapped by Hamas and is still being held by the terrorist group.

This year, the Gregorian calendar anniversary of the incident in Rafah in which Goldin was killed — which took place after Hamas violated a UN-brokered cease-fire — fell on Tisha B’Av, an annual fast day on which Jews remember past disasters.

Goldin is one of two fallen IDF soldiers — the other being Staff Sgt. Oron Shaul — who died in the summer 2014 Gaza war and whose remains have yet to be returned to Israel for burial.

“On this day of mourning and hope for stronger Jewish unity, we ask our Jewish brothers and sisters around the world to join us in helping bring Hadar home,” Leah Goldin — Hadar Goldin’s mother — told The Algemeiner on Tuesday. “We are deeply appreciative that the American leadership and other leaders around the world have expressed their empathy for our plight.”

“As we approach Shabbat Nachamu, we ask Jewish communities around the world to join us in remembering Hadar on the anniversary of his death and take action to uphold international humanitarian law and pressure Hamas to return Hadar and Oron,” she continued.

In an interview with The Algemeiner in April, Leah Goldin said, “Bringing a soldier back to Israel to burial is, first and foremost, a humanitarian issue. This is an important value in all religions. It’s about human dignity.”

During a February trip to the US, Goldin and her husband Simha met in New York City with America’s UN envoy, Nikki Haley.

“We hope that the [Trump] administration will take this on as an issue and help us to solve it,” Goldin said in April.