Fox News has canceled a planned GOP debate, after Donald Trump announced he would not attend.

The debate was set for this Monday night, the same evening the Republican presidential candidate is set to speak in a controversial appearance at AIPAC, the American-Israeli think tank.

Other planned speakers that night include Democratic candidates Hillary Clinton and Bernie Sanders, who is Jewish.

Trump has said he was not aware the Fox debate was scheduled for March 21, in explaining the timing conflict. Insiders have argued he must have been aware.

“I think we have had enough debates,” he said. “We have had 11 or 12 debates. I did really well on the last one. I think I have done well in all the debates…But I think we’ve had enough. How many times can the same people ask you the same question?”

“Nobody told me about it,” he added. “And I won’t be there, no.”

There have been major calls from protestors for Trump’s appearance at AIPAC to be canceled in the wake of a rise in Hitler and Nazi comparisons. Violence at a number of Trump rallies in recent days have strengthened the calls.

Trump has a traditionally pro-Israel record, though of course his opinions have not been policy-affecting.