US President-elect Donald Trump said on Sunday that Syrian President Bashar al-Assad "fleeed his country" after losing the support of his ally Russia.

"Assad is gone," he said on his social media platform Truth Social, adding, "His protector, Russia, Russia, Russia headed by Vladimir Putin, no longer cares about protecting him."

“There was no reason for Russia to be there in the first place,” Trump added. “They lost all interest in Syria because of Ukraine, where nearly 600,000 Russian troops have been wounded or killed in a war that should never have started and could go on forever.”

Trump stressed that Russia and Iran are now weak, due to Ukraine and the bad economy, according to Trump. Trump also saw the other, Iran, as weak because of Israel and its success in combat.

“Similarly, Zelensky and Ukraine want to make a deal. They have ridiculously lost 400,000 soldiers, and many civilians. There must be an immediate ceasefire and negotiations must begin. Too many lives are being wasted needlessly, too many families are being destroyed. If this continues, it could turn into something much bigger and much worse. I know Vladimir well. This is his time to act. China can help. The world is waiting!”

Hours before the fall of the Assad regime, Trump said the United States should not be involved in the Syrian conflict.

Trump wrote on his Truth Social account: "Syria is a mess, but it is not our friend, and the United States should have nothing to do with it. This is not our conflict. Let things work their way. Don't get involved!"

The White House announced that US President Joe Biden is closely following the "exceptional events" taking place in Syria, after opposition factions announced their control over the capital, Damascus, and President Bashar al-Assad fled.

“President Biden and his team are closely monitoring the extraordinary events in Syria and are in constant contact with our regional partners,” National Security Council spokesman Sean Savitt said in a statement on social media.