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The Trump administration announced a $2 billion pledge for United Nations humanitarian aid Monday and warned that agencies must "adapt, shrink, or die" under its overhaul, according to a statement from the Department of State.

The new package comes as the administration reins in traditional foreign assistance and pushes humanitarian organizations to meet stricter standards on efficiency, accountability and oversight.

"Individual U.N. agencies will need to adapt, shrink, or die," the statement said after outlining what it called "several key benefits for the United States and American taxpayers."

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Aid trucks of The United Nations Relief and Works Agency for Palestinian Refugees in the Near East (UNRWA) deliver aid near Gaza City on June 19. (Dawoud Abo Alkas/Anadolu via Getty Images)

"The United States is pledging an initial $2 billion anchor commitment to fund life-saving assistance activities in dozens of countries," the State Department said.

The administration also said that the contribution is expected to shield tens of millions of people from hunger, disease and the devastation of war in 2026 alone, with a new model significantly reducing costs. 

"Because of enhanced efficiency and hyper-prioritization on life-saving impacts, this new model is expected to save U.S. taxpayers nearly $1.9 billion compared to outdated grant funding approaches," the statement said.

Secretary of State Marco Rubio said the approach is intended to force long-standing reforms across the U.N. system and reduce the U.S. financial burden.

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"This new model will better share the burden of U.N. humanitarian work with other developed countries and will require the U.N. to cut bloat, remove duplication, and commit to powerful new impact, accountability, and oversight mechanisms," Rubio said in a post on X.