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US President Donald Trump announced, a day after the official signing of the nuclear deal with Saudi Arabia, that he requires the kingdom to join the Abraham Accords in order to proceed with the agreement.

This development comes as part of US efforts to enhance civilian nuclear cooperation with Saudi Arabia, amid regional and international sensitivities.

In a social media post on Thursday, Trump clarified that the signed deal would be approved but remains fully conditional on Saudi Arabia joining the Abraham Accords, which he described as highly respected and widely successful.

US Energy Secretary Chris Wright and his Saudi counterpart signed the agreement on Wednesday, which allows the kingdom to develop a civilian nuclear program.

The agreement has already drawn criticism from Israeli officials and is expected to face scrutiny in the US Congress.

CNN previously reported that the deal may grant Saudi Arabia the ability to enrich the fuel needed for its civilian nuclear reactors, and also includes restrictions on the extent of inspections allowed on the Saudi nuclear program, according to officials and informed sources.

Trump emphasized in his post that there would be no enrichment of nuclear materials. Meanwhile, Saudi Arabia had previously expressed reservations about joining the Abraham Accords, the initiative launched during Trump's first term and expanded in his second term to promote diplomatic relations between Israel and Arab countries.

It remains unclear how much Trump's social media post will affect the fate of the signed agreement.

CNN contacted the Saudi embassy for comment and also asked the White House whether implementation of the deal would be suspended pending Saudi Arabia's accession to the "Abraham Accords."

The nuclear deal raises Israeli concerns about a nuclear arms race in the region. Trump's linking of the deal to Saudi Arabia joining the Abraham Accords reflects his administration's priorities in promoting normalization with Israel. It is unclear whether Saudi Arabia will agree to this condition, especially given its previous cautious stance. The fate of the agreement hangs on the positions of the parties and congressional scrutiny. Political and energy circles are awaiting reactions from the kingdom and the White House.