U.S. President Donald Trump says visiting Saudi Arabian crown prince has urged him to take action to help end Sudan's civil war.

Trump in his remarks at the U.S.-Saudi Investment Forum said Prince Mohammed bin Salman told him that bringing an endgame to the war “would be the greatest thing you can do, that would be greater than what you’ve already done.”

The fighting for control of Sudan has killed over 40,000 people and created the world’s worst humanitarian crisis with over 14 million displaced. The civil war has pitted the Sudanese Armed Forces against the paramilitary Rapid Support Forces.

Trump, who boasts of ending several wars since returning to office and has openly lobbied for the Nobel Peace Prize, admitted he hasn't given a lot of thought to the fighting in Sudan.

“I thought it was just something that was crazy and out of control,” Trump said as he shared the stage with the crown prince. "But I just see how important that is to you. And to a lot of your friends in the room."