What impact can divestment have on the war in Gaza?

Students protesting the war in Gaza are calling for a ceasefire and for the U.S. to stop military aid to Israel. They're also calling for divestment. What does that mean, how might it work and what impact could it have?

Here & Now's Scott Tong talks with James Mackintosh, senior markets columnist at the Wall Street Journal, about divestment from companies doing business with Israel and how big or how small the impact might be.