Washington: President-elect Donald Trump vowed Monday, a month before he takes office, to wipe “terrorists” off the face of the Earth, after a series of high-profile attacks in Germany, Turkey and Switzerland.

“ISIS and other Islamist terrorists continually slaughter Christians in their communities and places of worship as part of their global jihad,” he said, referring to the Islamic State group.

Mr Trump then promised: “These terrorists and their regional and worldwide networks must be eradicated from the face of the Earth, a mission we will carry out with all freedom-loving partners.”

As a billionaire real estate investor, Mr Trump has curried favour with Moscow through his business dealings over the decades.

His pro-Russia views came under increasing scrutiny in 2015 as he opened his White House campaign.

“Today there were terror attacks in Turkey, Switzerland and Germany - and it is only getting worse. The civilized world must change thinking!” Mr Trump concluded on Twitter.