The Palestinians have said that they believe the participation of diplomats of European countries in opening the Embassy of the United States "a serious violation of global law".
At least 61 protestors were killed in clashes with Israeli forces.
"It is imperative we establish the facts of what is happening in Gaza", he said.
The Shin Bet said it had captured an interrogated a number of Hamas operatives.
A Gazan attempts to damage a border fence in footage released by the IDF from May 14 violence at the border.
Friday - the day protests usually peak - will be a key test of whether the current round of unrest will continue.
But as the dignitaries smiled on Monday, their words were being proven false at the border wall to the Gaza Strip, where the worst fighting between Israeli troops and Palestinians in four years was under way.
"We stress to the Zionist enemy and its leaders that the resistance movements whose people are participating in this peaceful movement with all awareness and concern for our people can respond with all force", it said.
Romania's President Klaus Iohannis, who is in charge of foreign policy, opposed the government plan. "Iran is supporting the riots in Gaza".
Safadi said the Israeli practices and the lack of a solution to the conflict worsen the situation and increase despair, which results in more violence and extremism and called on the global community to shoulder its legal and moral responsibilities to protect the Palestinians. According to Israeli sources many of those killed were affiliated with Hamas and other terrorist organizations. "No one would. No country in this chamber would act with more restraint than Israel has".
Israel and the USA blame the militant group Hamas for endangering civilians in Gaza by inciting them to protest - a view echoed in Canada by the Centre for Israel and Jewish Affairs, which requested an urgent meeting with Trudeau to convey its concern about his response to the violence.
A senior Palestinian official on Wednesday criticized USA ambassador to the UN Nikki Haley's speech at the Security Council the day before as "a total disconnect" with the reality.