How is uranium enrichment used to make nuclear bombs?

Israel targeted Iran's nuclear facilities at Natanz, Isfahan, and Fordow, killing several scientists. These sites are crucial for uranium enrichment, a process that is used to produce nuclear power but can be exploited to make nuclear weapons. How does it work?

How is uranium enrichment used to make nuclear bombs?
Israel targeted Iran's nuclear facilities at Natanz, Isfahan, and Fordow, killing several scientists. These sites are crucial for uranium enrichment, a process that is used to produce nuclear power but can be exploited to make nuclear weapons. How does it work?