Earlier this month, Kushner briefed top officials of Saudi Arabia, the UAE and Bahrain - none of whom recognize Israel - on the United States plan at a conference in Warsaw alongside Israeli Prime Minister Benjamin Netanyahu.
Kushner said on Monday that the USA has tried to figure out a "realistic and fair solution" to the issue.
"First principle is to have freedom".
Accompanied by the Jason Greenblatt, U.S. Mideast envoy, the two officials have visited the United Arab Emirates (UAE), and will carry on their visit to Bahrain, Oman and Qatar, the U.S. Embassy in Abu Dhabi said.
In an interview to the UK-based Sky News in Arabic, Kushner provided an overview of the so-called "deal of the century", yet boasted over the fact that the Trump Administration "managed to keep a large part of the plan secret", while successfully "formulating practical and just solutions to the Israeli-Palestinian issue that will be relevant for 2019".
"Respect. We want all people to have dignity and to respect each other. We want people to be able to have the freedom of opportunity, the freedom of religion, the freedom of worship, regardless of your faith", he said. "And the final one is security".
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Kushner noted that in contrast to previous worldwide attempts to resolve the highly-complex conflict, the main emphasis of the current plan does not focus as much on the issues, but rather presents both Israel and the Palestinians with incentives to allows them to achieve their full potential and eliminate hurdles that hindered their must aspired 'global integration'.
In a joint statement issued on Monday at the end of their first-ever summit in the Egyptian Red Sea resort town of Sharm el-Sheik, Arab and European leaders reaffirmed their common position "on the Middle East Peace Process, including on the status of Jerusalem, and on the illegality under worldwide law of Israeli settlements in the occupied Palestinian territories".
Palestinians, who have refused to discuss any peace blueprint with the USA in the wake of Trump's recognition of Jerusalem as Israel's capital in 2017, also viewed Kushner's comments with suspicion. They see the eastern part of the disputed city as the capital of their future state and have said Washington's pro-Israel bias meant the U.S. could no longer be the main mediator in stalled Palestinian-Israeli peace talks.
And the new union of the Bayit Yehudi, National Union and Otzma Yehudit parties, known as the Union of Right-Wing Parties (URP), said that Trump's "plan of the century" repeats "the failed paradigms that brought us more than 1,000 deaths and to thousands of missiles on Israel, and presents a clear and immediate danger to the existence of the State of Israel".
Kushner, 38, has been given responsibility over Washington's Israel-Palestine policy, along with other top postings, after his father-in-law was inaugurated in January 2017. Netanyahu's governing coalition is composed of religious and nationalist hardliners who oppose serious concessions to the Palestinians.