If even Turkey and Germany abandon the Palestinian Arabs, one would think they must be doing something wrong. Yet, the Palestinian Authority’s president, Mahmoud Abbas, keeps talking himself out of global favors. 

This morning at Berlin, Chancellor Scholz denounced his guest, Mr. Abbas, who accused Israel of committing worse crimes than the Nazis. Also today, President Erdogan of Turkey and Prime Minister Lapid of Israel announced the renewal of full diplomatic relations between their two countries.

Relations had been broken after the Mavi Marmara incident of 2010, when Israeli commandos and pro-Hamas Turkish activists clashed at sea. Now an exchange of ambassadors between the countries is widely seen as a major development in a region where Israel is increasingly accepted as Palestinian Arabs’ cause is fading. 

At the same time, “Old Europe” remains committed to promoting Palestinian statehood even as its favored leader — the 87-year old Mr. Abbas — has near-zero support on the West Bank. Palestinians have long tired of his now 17-year oppressive presidency that was supposed to last four years.  

As a young man, Mr. Abbas attended university at Moscow, where he wrote a bizarre thesis arguing that Jews caused the Holocaust and tolerated Nazi racism to guarantee “immigration to Palestine.” The paper also expressed doubt that as many as 6 million Jews were murdered. 

Yesterday, at a Berlin press conference alongside Mr. Scholz, the Palestinian leader was asked if he regretted the 1972 massacre of Israeli athletes at the Berlin Olympic Games, which was committed by a terrorist group affiliated with his Fatah party. 

“If we want to go over the past, go ahead,” he said. “From 1947 until today, Israel has committed 50 massacres in 50 Palestinian villages. Fifty slaughters. Fifty Holocausts.” 

Mr. Scholz merely flinched, but today he released a scathing statement: “I am disgusted by the outrageous remarks” made by Mr. Abbas. “For us Germans in particular, any relativization of the singularity of the Holocaust is intolerable and unacceptable. I condemn any attempt to deny the crimes of the Holocaust.”

Mr. Lapid favors a warming up of relations with Mr. Abbas, which were frozen when Prime Minister Netanyahu was in office. Yet, as a Holocaust survivor’s son, he responded quickly to the remarks of the Palestinian Arab leader at Berlin.

For Mr. Abbas, while standing on German soil, to accuse Israel of having committed “50 Holocausts” is “not only a moral disgrace, but a monstrous lie,” Mr. Lapid tweeted. “Six million Jews were murdered in the Holocaust, including one and a half million Jewish children. History will never forgive him.”

Mr. Abbas has been telling reporters that when the United Nations General Assembly convenes in September for its annual speech marathon, he plans to push for a Palestinian state to be admitted as a full member of the world body. 

The UN in 2012 recognized the Palestinian Authority as an “observer state.” Yet full UN membership requires a recommendation by the 15-member Security Council, where America threatens to veto any Palestinian attempt to be recognized as a state, unless it is the result of direct negotiations with Israel.

After the comments yesterday, Mr. Scholz reportedly told Mr. Abbas that he should forget about European support for full UN membership. 

A loss of Western Europe support could cost Mr. Abbas, as Germany and its allies have long promoted his Palestinian Authority as a positive force for peace. Holocaust denial is verboten in Germany, as well as at the UN. Yet, Ramallah can always rely on diplomatic support from Arab and Muslim states. Or can it? 

For several years now, top Arab League members have joined Egypt and Jordan in signing treaties and formalizing diplomatic relations with Jerusalem. Even members of the Arab League that haven’t signed on to the Abraham Accords, such as Saudi Arabia, have warmed up to the Jewish state. 

While these countries publicly continue to boost the Palestinian Arab government at Ramallah, the ability of the Palestinian issue to unite the region is fast fading. So is hatred of Israel.

Now even Turkey is jumping on the bandwagon. Unlike most leaders in the region, Mr. Erdogan has long preferred the Islamist terror organization Hamas to Mr. Abbas’s Fatah. His support of the “Palestinian cause” has long been peppered with antisemitic themes that underlined his political speeches. 

Running for re-election next year, however, Mr. Erdogan presides over high inflation, a declining economy, and eroding support at home. Many policies he has espoused are discarded in favor of new ones, at times with little explanation or reasoning. 

“At this stage, Erdogan would sell anybody, including his mother, if it helps him get re-elected,” a Foundation for Defense of Democracies Turkey watcher, Sinan Ciddi, told the Sun. 

The about-face on Israel is part of Mr. Erdogan’s “making it up as he goes along,” Mr. Ciddi said of the inconsistent policies. Even after today’s announcement, for one, Ankara has yet to publicly commit to expelling top leaders of Hamas who operate from Turkey. 

The Turkish foreign minister, Mevlüt Çavuşoğlu, stresses that while a Turkish ambassador will return to Tel Aviv for the first time since 2010, “we will continue to defend the rights of Palestinians.”

After today’s U-turn on Israel, though, Hamas leaders need to worry that, like many former Erdogan allies, they too could soon be thrown under the bus. As Turkey warms up to Israel and Germany turns its back on Mr. Abbas, perhaps it’s time Ramallah contemplates a U-turn of its own.