London: Us President Donald Trump attacked Germany's Angela Merkel via his favourite medium - Twitter, claiming the German people were turning against her tenuous political coalition over immigration. The jab came as the Chancellor struck a political deal to avert the collapse of her government.

Trump has long been a critic of Merkel's open-door policy toward Syrian refugees fleeing the country's civil war. The ongoing fallout of that policy continues to dog Merkel, now in her fourth term, as anti-immigrant and populist pushes make headway across Europe, most recently in Italy.

Writing on Twitter, Trump claimed that the influx of migrants had "violently changed" Germany's culture.

"The people of Germany are turning against their leadership as migration is rocking the already tenuous Berlin coalition," he said.