Hollywood star Sylvester Stallone has praised the Armenian genocide-themed film “The Promise.”

“This extraordinary film is opening April 21… It is a subject that I have been fascinated with for decades and it has taken many years for it to finally have the guts to make it and finally bring it to the screen all to see,” Sylvester Stallone said in a Facebook post.

“It is true and incredibly important historical drama that has all the extraordinary ingredients that can make a movie Oscar quality. Its amazing lead actors Christian Bale and Oscar Isaac play their parts to perfection! And a special shout out to it’s a legendary producer, Mike Medavoy, who finally brought this epic story to the screen. Also, I owe Mike Medavoy A great deal because he’s the one who gave Rocky the greenlight, and that’s why am here today. This film has it all…!!! I’m jealous,” the actor said.

Set during the last days of the Ottoman Empire, “The Promise” is an epic human drama about a love triangle between Michael Boghosian, a brilliant medical student played by Golden Globe winning actor Oscar Isaac, the beautiful and sophisticated Armenian artist Ana played by Charlotte le Bon, and Chris Myers, a renowned American photo-journalist covering the war played by Oscar-winning actor Christian Bale.

The film is also supported by an impressive cast of international actors. Their relationships unfold amidst the start of the Armenian Genocide, causing major upheaval of their lives and a struggle just to survive.

The Promise hits theaters April 21.