World leaders have warned that US embassy relocation in Israel would escalate tensions in Mideast.

World leaders have voiced criticism after Washington relocated its' illegal embassy in Israel from Tel Aviv to al-Quds, saying the move will ignite tensions across the Middle East region.

Britain in a statement on Monday reiterated that the administration of Prime Minister Theresa May had no plans to move its mission to al-Quds and still disagreed with the US decision.

French Foreign Minister Jean-Yves Le Drian in a statement also spoke out against the US move, saying along with many other critics that it violated "unambiguous" international law and UN Security Council resolutions.

Meanwhile, Russian Foreign Minister Sergei Lavrov reiterated Moscow's objection to the controversial US move, saying Moscow "has several times offered a platform" for talks on the status of al-Quds.

Turkish President Recep Tayyip Erdogan, during a visit to London, said that the United States had lost its role as mediator in the Middle East by moving its embassy to the occupied territories.

Moroccan King Mohammed VI also denounced Washington's "unilateral decision."

The Egyptian Foreign Ministry, in a statement, voiced "strong denunciation" of Israel's use of force against Palestinian civilians and said Cairo "totally supports the legitimate rights of the Palestinian people, and first and foremost its right to an independent state with East al-Quds as its capital."

The Palestinian president, who declared three days of mourning, also condemned Israeli "massacres" along the Gaza border after the regime's forces killed dozens of Palestinians during Monday's clashes and protests coinciding with the opening of the new US embassy.

The Palestinian Hamas resistance movement also vowed protests would continue.

The US on Monday moved its embassy in Israel to al-Quds after months of global outcry. 

In the hours leading up to the inauguration, Israeli troops engaged in clashes with Palestinians taking part in mass protests on the Gaza border.

Israeli gunfire killed 59 Palestinians and wounded over 2,700 in the Monday clashes -- the highest toll in a single day since a series of protests demanding the right to return to ancestral homes began on March 30.

The occupied territories have witnessed new tensions ever since US President Donald Trump on December 6, 2017 announced US recognition of al-Quds as Israel’s “capital” and said Washington would move US embassy to the city. 

The dramatic decision triggered demonstrations in the occupied Palestinian territories as well as Iran, Turkey, Egypt, Jordan, Tunisia, Algeria, Iraq, Morocco and other Muslim countries.

The status of al-Quds is the thorniest issue in the decades-long Israeli-Palestinian conflict.