Israeli Prime Minister Benjamin Netanyahu issued an order Tuesday mandating that his office approve all "secret" diplomatic meetings in advance, his spokesperson said.
It comes as Israeli officials scrambled to contain the growing diplomatic firestorm over Israel's disclosure that its top diplomat had met with his Libyan counterpart.
The exposure of the first-ever known encounter between Israeli and Libyan foreign ministers ignited angry street protests in several Libyan cities and sent Libyan Foreign Minister Najla Mangoush fleeing to Turkey for fear of her safety.
Libyan Prime Minister Abdul Hamid Dbeibah, who heads one of the country's rival governments, said he was temporarily suspending Mangoush from her position over the reported meeting. Libya has a history of poor relations with Israel.
Netanyahu sent the directive Tuesday to all government ministries, requesting they receive approval from his office before conducting any covert political talks. The order also asked that Netanyahu personally approve the publication of news concerning such sensitive meetings.
A Netanyahu aide, Topaz Luk, said Netanyahu issued the order in response to fallout from the Libya scandal. It was not known if Netanyahu knew about Foreign Minister Eli Cohen's meeting with Mangoush ahead of time.
Israel's Foreign Ministry announced Sunday that Cohen met Mangoush in Rome last week in what it hailed as a "historic" step toward the normalization of ties with Libya.
Having established diplomatic ties with the UAE and Bahrain, during the Trump administration, Netanyahu's government anxiously wants to do so with other Arab states - including Saudi Arabia - although such moves are widely opposed in the Arab world due to Israel's treatment of Palestinians, considered by major rights groups to be tantamount to apartheid.
Within hours of the revelation, Mangoush was on a plane to Turkey, Dbeibah announced her suspension and Netanyahu's political opponents were seizing on the crisis to criticise the foreign minister and his lack of discretion.
A ministry official, speaking on condition of anonymity to discuss behind-the-scenes diplomacy, said the ministry was forced to go public after an Israeli news site learned about the meeting.
Israeli media said the acting US ambassador to Israel, Stephanie Hallett, had expressed American displeasure with the Israeli announcement in a meeting with Cohen on Monday. The US Embassy had no immediate comment.
In Libya, protests erupted for a second straight night Monday over the prospect of normalisation with Israel. Demonstrators set tires ablaze, waved Palestinian national flags and chanted against Dbeibah, the prime minister.
The leader of Libya's Tripoli-based administration in the country's west, Dbeibah has defied calls for him to hand over power . The oil-rich nation has for years been split between two rival governments in its eastern and western halves. Each side has been backed by armed groups and foreign governments.
Libya was plunged into chaos after a NATO-backed uprising toppled longtime dictator Muammar Gaddafi in 2011.