The message from the Arab League came after it was gathered in an extra convening meeting on Saturday in the Egyptian capital Cairo.
Palestinian President Mahmud Abbas had then called for support from the member of the Arab League. The crisis meeting was an important test if there was a united front among the countries of the Arab world against the peace plan.
Attempts have been made from Washington to get countries to support the plan presented earlier this week.Hard line
But the high diplomatic and political game on Washington's side of the Arab League seems to have failed.
- You could have chosen to present elegant diplomatic formulations. But that doesn't seem to be the case, says Persson, who followed the meeting but was unable to read the entire final statement.
The tone is clear: The plan is "unfair" to the Palestinians, the Arab League, which rejects it on the grounds that it does not fulfill even a minimum of Palestinians' rights and aspirations, writes the AFP news agency.Cancels collaboration
The union's members also pledge not to cooperate with the United States to implement the plan.
During the meeting, President Abbas reiterated his complete abstention from Trump and his plan.
- There will be no relationship with you (Israel) and the United States, nor with regard to security cooperation, says Abbas according to AFP.
He motivates the decision that the United States and Israel ignore the signed agreements and international law. Trump's plan runs counter to the peace agreement between Israelis and Palestinians reached in Oslo in 1993, Abbas adds.Split reactions
The Arab countries' reaction to Trump's plan has been fragmented in the past. The United Arab Emirates, Bahrain and Oman showed it symbolic support by attending with their ambassadors when Trump and Israeli Prime Minister Benjamin Netanyahu presented the plan at the White House.
Saudi Arabia, which is also closely allied with the United States, has not previously commented on the plan's content but said it appreciated Trump's efforts.
The EU also has clear divisions within its ranks in the formulation of a Middle East peace plan.