Former presidents George W. Bush and Barack Obama have once again joined forces to criticize President Donald Trump, this time over cuts to international programs they say are vital to U.S. interests. In a new video, Bush appears alongside Obama and U2 frontman Bono, an outspoken Trump critic, praising the departing staff of USAID, the international diplomacy agency that Trump significantly reduced earlier this year. Bush has long championed funding for programs combatting AIDS and HIV in parts of Africa.

Bush, who has mostly avoided criticizing Trump since he took office in 2016, used his video remarks to mourn the loss of staffers he credited with promoting global stability by combating the spread of AIDS and HIV—a program credited with saving 25 million lives over the past 20 years.

“You’ve showed the great strength of America through your work — and that is your good heart,’’ Bush told USAID staffers, according to the Associated Press. “Is it in our national interests that 25 million people who would have died now live? I think it is, and so do you.”

“Gutting USAID is a travesty, and it’s a tragedy,” Obama added in a video shown to departing USAID employees on Monday. “Because it’s some of the most important work happening anywhere in the world.” Calling the decision by Trump “a colossal mistake,” he added that “sooner or later, leaders on both sides of the aisle will realize how much you are needed.”READ MORE BELOW