Peace is the word. Trotsky scolded Marconi over his claims that broadcasting would end all wars. Technology is passive, it can carry positive and negative messaging. So while the mere invention of radio wont deliver war or peace it can be used for either.
As an avid anorak growing up in the 1980s the Voice of Peace was a regular news item on FRC shows I would listen to. There was something about the Middle East on fire from all out war, and a group of radio hippies in a ship in the middle of the Mediterranean broadcasting a message of peace to the people of the region.
November 2023 I made a tribute to the Voice of Peace. Hear it again here. And as a bonus some additional retro recordings of the peace ship project.