Challenged on the assertion by an Abbas aide that the American plan was "a waste of time and is destined to fail", Kushner said he believed that the Palestinian leadership said such things "because it's afraid that we are going to publish our peaceful plan that will be liked by the Palestinian people".
The PA leadership, he added, does not have the ability to face any sanctions the USA could impose on the Palestinians once they reject the American peace plan.
More than 120 Palestinians have been killed since March 30 amid a continuing protest movement along the border fence separating Gaza and Israel. It also accused him of engaging in "deception" against global law and "promoting normalization" between Arabs and Israel.
"The global community is getting frustrated with Palestinian leadership and not seeing many actions that are constructive toward achieving peace", he said, according to an Associated Press report of the interview.
In his al-Quds interview, Kushner said they were "almost done" preparing the plan. The team met with leaders of Israel, Jordan, Qatar, Egypt and Saudi Arabia to discuss the worsening humanitarian situation in Gaza and the administration's proposals for a peace deal.
The Palestinians have since excluded the United States from the Mideast peace sponsors, and turned to Europe and other countries for a multilateral sponsorship.
The Palestinian Authority has refused to meet U.S. envoys since Trump announced his decision on Jerusalem on December 6, and later ordered the U.S. Embassy moved there from Tel Aviv. The status of East Jerusalem, which Palestinians want as the capital of a sovereign Palestinian state, has been at the center of the decades-long struggle for peace between Israelis and Palestinians.
The U.S. plan is expected to propose solutions to core issues in dispute between the Israelis and Palestinians, such as borders, the future of Israeli settlements, the fate of Palestinian refugees and security. Kushner pointed the finger at Abbas, as the party that is unwilling to take up negotiations.
He went on to say the interview was "an attempt to push forward a plan that consolidates Israel's colonial control over Palestinian land and lives while telling the Palestinian people that money will compensate for our inalienable rights".
After Israel's devastating military onslaught against Hamas-run Gaza in mid-2014, in which some 2,150 Palestinians were killed, Israel began allowing Palestinian fishermen to fish up to six nautical miles off the Gaza coast, as opposed to three nautical miles previously.
She rose to prominence in the 1960s and 70s defending Palestinian detainees from the occupied West Bank and Gaza Strip, also authoring several books highly critical of Israeli forces.
Israeli forces and settlers pulled out of the Gaza Strip, now controlled by Abbas's main rival, the Islamist Hamas group, in 2005.