The United States and Israel officially quit the U.N.’s educational, scientific and cultural agency at the stroke of midnight, the culmination of a process triggered more than a year ago amid concerns that the organization fosters anti-Israel bias.

The withdrawal is mainly procedural yet serves a new blow to UNESCO, co-founded by the U.S. after World War II to foster peace.

The Trump administration filed its notice to withdraw in October 2017 and Israeli Prime Minister Benjamin Netanyahu followed suit.

The Paris-based organization has been denounced by its critics as a crucible for anti-Israel bias: blasted for criticizing Israel’s occupation of East Jerusalem, naming ancient Jewish sites as Palestinian heritage sites and granting full membership to Palestine in 2011.

The U.S. has demanded “fundamental reform” in the agency that is best known for its World Heritage program to protect cultural sites and traditions. UNESCO also works to improve education for girls, promote understanding of the Holocaust’s horrors, and to defend media freedom.

The withdrawals will not greatly impact UNESCO financially, since it has been dealing with a funding slash ever since 2011 when both Israel and the U.S. stopped paying dues after Palestine was voted in as a member state. Since then officials estimate that the U.S. — which accounted for around 22 percent of the total budget — has accrued $600 million in unpaid dues, which was one of the reasons for President Donald Trump’s decision to withdraw. Israel owes an estimated $10 million.

Source: TIME