An emergency meeting is slated to be convened in Istanbul on Saturday by a number of NGOs to discuss the most productive steps to respond to the US President Donald Trump’s Tuesday announcement of his controversial Mideast peace plan.

The meeting falls in line with simmering calls for launching large-scale popular protests to speak up for Palestinians’ inalienable rights of return and in protest at all initiatives negating such an internationally-recognized right.

A spokesman for the London-based Palestinian Return Centre (PRC), which initiated the calls for the emergency meeting, said the event seeks to outline a road map for sweeping protest moves to be staged nationwide and oversees in order to stress Palestinians’ firm rejection of the US plan and commitment to their inalienable right, most notably the right of return.

NGOs from Palestine, Jordan, Lebanon, and Europe are expected to join the meeting and denounce alternative home initiatives for Palestine refugees.

U.S. President Donald Trump on Tuesday presented his controversial Middle East peace plan, calling for a two-state solution while recognizing Jerusalem as Israel's "undivided capital."

The Palestinian Foreign Ministry said in a statement that the “deal of the century” reinforces Israel’s position and its apartheid policies against the Palestinians.

“The plan is a Trump-drafted version of the Balfour Declaration and an old Israeli plan in a US mask”, the statement read. “This is a new conspiracy aiming to liquidate the Palestinian cause and negate Palestinians’ national and legitimate rights, most notably the right to self-determination, return to the homeland, and the establishment of an independent Palestinian State along the 1967 borders with Jerusalem as its eternal capital”.