Morocco's latest decision to allow thousands of migrants to enter the Spanish enclave has added strain between the two sides, with the European Union calling the move "blackmail".
At least 5,000 migrants reached the enclave by swimming or walking at low tide from beaches in neighbouring Morocco, says local government spokesperson.
The deal worth millions is set to bring the two countries closer and marks another step in the growing international market for Turkish drones.
"We ask the United Nations to urgently fulfill its promises: that of ridding Western Sahara of colonisation, in accordance with its Charter and its resolutions," Polisario Front leader Brahim Ghali said in a speech at a refugee camp.
US President Biden will risk alienating Morocco, a reliable ally, if it reverses the Trump administration's deal.
The Saharawi army launched four rockets in the direction of Guerguerat along the security wall that separates Saharawi fighters from Moroccan forces in the desert territory.
The disputed territory of Western Sahara was central to a deal announced by US President Donald Trump, establishing diplomatic ties between Morocco and Israel.
Morocco becomes the latest country to normalise relations with Tel-Aviv but regional experts say the victory could be short-lived.
Polisario Front, which has campaigned for independence for former Spanish colony since 1970s, promises to fight on until "occupation troops" withdraw, a day after US recognised Rabat's sovereignty there.
Israeli prime minister welcomes fourth US-brokered deal between Israel and an Arab country but Palestinians worry it will increase Israel's settlement expansion in the occupied West Bank.
Polisario Front rebel group that seeks independence for Western Sahara says ongoing fighting will end if Rabat ends its "occupation" of the disputed territory.
Escalating tensions might threaten a three-decade-long ceasefire between Rabat and the Polisario Front, which demands independence from Morocco.
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