In an unprecedented move, Israel on Tuesday co-sponsored a draft resolution against Syria that was submitted by Saudi Arabia at the United Nations Human Rights Council.

The resolution, which was also backed by the U.S., France and Germany, passed with an overwhelming majority of 108 countries voting in favor, 17 voting against and 58 abstaining.

Although Israel has previously supported resolutions submitted by Saudi Arabia at the U.N., it has never signed on as a co-sponsor.

In a statement delivered prior to the vote, Saudi Arabia’s Ambassador to the U.N. Abdallah Al-Mouallimi slammed the “the grave deterioration in the state of human rights in Syria.”

When the list of the resolution’s co-sponsors was read aloud, Syria’s U.N. envoy, Bashar al-Jaafari, mockingly congratulated Riyadh for Israel’s direct involvement, stating that it served as evidence of a secret Israeli-Saudi alliance. The Syrian ambassador also accused all of the resolution’s co-sponsors of supporting terrorism.

“The Assad regime, with full support from Iran, has been slaughtering its people mercilessly and with incomprehensible cruelty for years,” Israeli Ambassador to the U.N. Danny Danon responded. “Israel, which for years has been providing humanitarian aid to Syrian civilians hurt by these atrocities, stands together with the international community against this murderous regime.”

Israel’s co-sponsoring of the Saudi resolution came a week after the Israeli Foreign Ministry reportedly instructed its envoys to launch a global diplomatic campaign against Iran and the Lebanese terror group Hezbollah, and in support of Saudi Arabia and its allies.