OSLO, Norway — The International Campaign to Abolish Nuclear Weapons won the Nobel Peace Prize on Friday, a forceful show of support for a grassroots effort that seeks to pressure the world’s nuclear powers to give up the weapons that could destroy the planet.

The choice of the little-known coalition of disarmament activists put the Nobel committee again at the forefront of geopolitics at a time when fears are rising over North Korea’s nuclear and missile program and the invective it has drawn from U.S. President Donald Trump.

The committee cited the tiny, Geneva-based ICAN for its work that led to the Treaty on the Prohibition of Nuclear Weapons that was reached in July at the United Nations.

More than 120 countries approved the treaty over opposition from nuclear-armed countries and their allies. In a statement, the U.S. reiterated its position that the treaty “will not result in the elimination of a single nuclear weapon.”

The U.S., Russia, China, Britain and France support nuclear nonproliferation but boycotted the treaty negotiations.