Israel "is, through its premeditated and deliberate policies, destroying the two-state solution," the Palestinian Authority (PA) president said in a speech to the General Assembly.
Israel and the U.S.-allied UAE share an ultimate fear, that Iran obtains a nuclear weapon, an ambition Tehran denies.
"The only way to prevent Iran from getting a nuclear weapon is to put a credible military threat on the table," Lapid said in a speech at the UN General Assembly.
UN Special Envoy for Syria Geir Pedersen also attends Astana format meeting
The surprise step, under the US-brokered Abraham Accords, broke with decades of Arab consensus that ruled out formal ties while the Palestinian conflict was unresolved.
Israel is conducting a successful diplomatic campaign to stop the nuclear agreement and prevent the lifting of sanctions on Iran.
The Israeli spy agency shared ‘sensitive intelligence materials’ with US agencies in a bid to spike the agreement.
The two also discussed regional developments including "Iran's terrorist activity in the Middle East and beyond".
‘We proved that Iran lied to the International Atomic Energy Agency with thousands of documents we obtained from Iran's archives,’ says Yossi Cohen
Barrack, charged with acting as a UAE agent without notifying the U.S. attorney general as required, has pleaded not guilty.
Abbas had accused Israel of committing "50 Holocausts" against Palestinians since 1947.
Turkish Foreign Minister Mevlut Cavusoglu said the return of ambassadors was "important to improve bilateral ties", while vowing to "defend" Palestinian rights.