How do I repaint a rusted metal table and chairs?

I have an outdoor table and chairs that were previously painted twice over the original white. I believe they used the wrong kind of paint, or maybe didn't prep it properly. Either way, the paint is all peeling off in big flakes. Where the metal shows through it is rusting. If it was all just rusty metal I could prime and paint it, but not sure how to start this project? What's the easiest way to get the old paint off? A wire brush doesn't seem to work very well because there isn't enough surface for it to grab hold...
q how do i repaint a rusted metal table and chairs
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