President Trump on Tuesday condemned the "evil losers" who carried out a terrorist attack at a British concert hall on Monday evening, vowing to refer to terrorists only as "losers" in the future.

"I extend my deepest condolences to those so terribly injured in this terrorist attack, and to the many killed and the families, so many families, of the victims," Trump said during a joint appearance with Palestinian Authority President Mahmoud Abbas on Tuesday. "So many young, beautiful, innocent people living and enjoying their lives, murdered by evil losers in life.

"I won't call them monsters, because they would like that term, they would think that's a great name," Trump added. "I will call them, from now on, losers, because that's what they are."

The president stressed that the "wicked ideology" of terrorism "must be obliterated" by uniting countries and faiths against extremism.

"We must be resolute in condemning such acts in a single, unified voice," Trump said. "Peace is a choice we must make each day."

An apparent terror attack at an Ariana Grande concert in Manchester on Monday evening claimed at least 19 lives and injured dozens more.