The United States has spent a record of at least $17.9 billion on military aid to Israel since the war in Gaza began and led to escalating conflict around the Middle East.

Unlike the United States’ publicly documented military aid to Ukraine, it was impossible to get the full details of what the U.S. has shipped Israel since last Oct. 7, so the $17.9 billion for the year is a partial figure, the researchers said.

They cited Biden administration “efforts to hide the full amounts of aid and types of systems through bureaucratic maneuvering.”