In a letter on Thursday, Haniyeh said that the Palestinian people as a result of their stormy intifada in the West Bank and Beit al-Moqaddas will thwart Trump's plot and their followers in the capitals all around the world against Palestine.
On December 6, Trump defied global warnings and said Washington formally recognized al-Quds (Jerusalem) as the “capital” of Israel and would begin the process of moving its embassy to the occupied city, breaking with decades of American policy.
Trump's declaration has sent shock waves throughout the Muslim world and even prompted warnings from Washington’s allies in the West that it would bring more chaos to the region.
Haniyeh said that the decision was a step toward paving the way for some Arab states in the region to make allegiance to the Israeli Zionist regime and disarm the resistance.
He also stressed his 'strong faith' in the role of Iran's Leader in steering the Islamic Republic power and its commanders to confront the plot against Quds.
Referring to the Riyadh conference and Trump's comments on Iran describing Hamas and Hezbollah as his enemies, the Palestinian leader said in his letter that Trump's malice has become more obvious through recent developments and claims.
In relevant remarks earlier this month, Ayatollah Khamenei underlined that the US is overstepping its boundaries in recognizing al-Quds (Jerusalem) as Israel’s “capital" and planning to move its embassy there, saying such measures are in vain.
Ayatollah Khamenei made the remarks during a meeting with participants in the 13th Session of the Parliamentary Union of the Organization of Islamic Cooperation (OIC) Conference in Tehran.
Ayatollah Khamenei described the recent decisions by US officials concerning Jerusalem al-Quds as "arrant erring", and said, "They will not be able to carry out this measure and their efforts will not bear fruit."
Ayatollah Khamenei also said the Palestinian cause is among the main issues of the Muslim world, adding, "In the Palestinian issue, the three incidents of 'land occupation', 'mass expulsion of millions of people' and 'massacre and horrible crime against humanity' occurred."
The Supreme Leader said that these acts of oppression have never ever happened against any other nation.
Ayatollah Khamenei stressed the importance of countering the "conspiracy of silence" aimed at cosigning to oblivion the main issues of the Muslim world, particularly the Palestinian cause.
The Supreme Leader urged Muslim countries to counter the "dangerous and horrific Western propaganda empire" which, the Leader said, is run by Zionists.
Ayatollah Khamenei warned that the important issue of Palestine is being totally ignored by the international community.
The Supreme Leader emphasized that the Muslim world must now play a role in "important and fundamental issues" and prevent the reoccurrence of the "bitter experience of the past decades and dominance of powers and their long-term effects".
Ayatollah Khamenei urged the Muslim countries to be explicit vis-à-vis the fundamental issues of the Muslim world in order to be able to influence public opinion and set trends.
The Supreme Leader emphasized the significance of "unity in the Muslim world" and said unity in the Muslim world which enjoys enormous facilities and a very crucial global status can prepare the ground for the formation of a "big and influential power."
Ayatollah Khamenei added that Muslim countries should not allow discord, war and bloodshed, whose main cause are the US and Zionists, to establish a safe haven for the Zionist regime.
The Supreme Leader further pointed to the US claim on advocating human rights and said the current US president is stating the country's stances "very nakedly and explicitly."
Ayatollah Khamenei called on the Muslim nations to help resolve the crises in Yemen and Bahrain as they are among the important issues of the Muslim world.
The Supreme Leader also said the Iranian nation has managed to thwart the enemies' economic war against the Islamic Republic, including sanctions, through its resistance.