Saudi Arabiainfo-icon's Foreign Minister Adel al-Jubeir says Qatarinfo-icon must pay for the USinfo-icon military presence in Syriainfo-icon if it wants to sustain Washington's support.

"Qatar has to pay for US military presence in Syria and send its military forces there, before the US president cancels US protection of Qatar," Jubeir said in a statement carried by the Saudi Press Agency (SPA) on Tuesday. 

He made the remarks hours after US President Donald Trumpinfo-icon urged wealthy Middle Eastern countries to increase their spending in Syria in a bid to contain Iraninfo-icon after the collapse of the Daesh terrorist group in the Arab country.

"Very rich countries are in the Middle Eastinfo-icon.  They have to make major contributions.  They have not been doing it as they should.  A major topic that we discussed a little while ago: They have to step up tremendously -- not a little bit, but tremendously -- their financial effort," Trump said in a press conference with French President Emmanuel Macron.

Jubeir further claimed if the US withdraws its 11,000 military personnel from al-Udeid Air Base southwest of Dohainfo-icon, Qatar "would fall there in less than a week."

Last week, the top Saudi diplomat expressed Riyadh's readiness to send troops to Syria as part of a potential wider deployment led by the US.

The comments came in response to Trump's call on Washington's allies, "including Saudi Arabia, the United Arab Emiratesinfo-icon, Qatar, Egyptinfo-icon, and others" to form an Arab force to replace the US military in Syria.

The Saudi foreign minister says Riyadh could deploy troops into Syria if the US sends its forces into the Arab country.

"We have asked our partners to take greater responsibility for securing their home region, including contributing larger amounts of money," he said.

Additionally, US military newspaper Stars and Stripes revealed last month that Trump had asked Saudi Arabia's King Salman bin Abdulaziz Al Saud for $4 billion to spend on advancing Washington's objectives in Syria, which Riyadh also shares.

Last December, the US president lamented Washington's waste of $7 trillion in the Middle East wars.

"After having foolishly spent $7 trillion in the Middle East, it is time to start rebuilding our country!" he tweeted.

The Riyadh regime, a staunch supporter of anti-Damascus militants, fears a US pullout may help Syria win the fight against extremist groups that are inspired by Wahhabism, a Takfiri ideology dominating the Saudi kingdom.