The United Arab Emirates and Bahrain became only the third and fourth Arab states to agree to normalize ties with Israel, following Israel's 1979 peace deal with Egypt and a 1994 pact with Jordan
Israel and Bahrain will officially establish diplomatic relations on Sunday at a ceremony in Manama as the wealthy Gulf region continues to open up to the Jewish state.
An Israeli delegation, led by National Security Council chief Meir Ben Shabbat, arrived from Tel Aviv for a one-day trip that will see Israel and Bahrain formalize a US-brokered agreement they signed at the White House on September 15.
The United Arab Emirates and Bahrain became only the third and fourth Arab states to agree to normalize ties with Israel, following Israel's 1979 peace deal with Egypt and a 1994 pact with Jordan.
A flurry of diplomacy between some of Washington's key regional allies has handed US President Donald Trump a key foreign policy win as he campaigns for re-election ahead of polls in November.
"Bahrain and Israel will sign a joint communique on the establishment of diplomatic, peaceful and friendly relations, as well as a number of memorandums of understanding in areas of mutual benefit," according to a joint statement.
US Treasury Secretary Steven Mnuchin and Trump's special assistant for international negotiations, Avi Berkowitz, travelled to Tel Aviv before joining the Israeli delegation's flight to Manama.
The two sides will be free to open embassies in each other's countries after a ceremony scheduled for Sunday evening, Berkowitz said, adding that an Israeli embassy in Manama could open within months.
Israel's Shabbat said in Arabic it was a "great day", adding these relations will "most likely benefit both sides."
Before takeoff, he said the aim was "to translate into practical plans and concrete agreements the peace declaration that was signed on the White House lawn."
The Jewish state's normalisation of ties with the UAE and Bahrain has however outraged the Palestinians, who have called the deals "a stab in the back" and urged Arab states to maintain unity against Israel.
Like Israel, both Manama and Abu Dhabi have vehemently anti-Iran foreign policies and Tehran has slammed the normalisation.
The Gulf monarchies have broken decades of Arab consensus that there would be no relations with the Jewish state until it had made peace with the Palestinians.
Bahrain, unlike the UAE, has a history of open politics and civil society movements, although rights have been curtailed in the past decade.
In a rare display of dissent in the small oil-rich kingdom last month, dozens took to the streets in Abu-Saiba, a Shiite village near Manama, to protest the government's decision.
In the wake of the Arab Spring protests in 2011, the Sunni monarchy accused thousands of dissidents from the Shiite majority of receiving orders from Iran.