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No country right now has a monopoly on ASAT technology and geosynchronous satellites are not exactly uncommon either. Should ASAT be used in a regional conflict, the entire world's access to space could easily be denied due to the after effects. It unlikely that shooting down satellites would be the first choice in a small conflict.

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I'm not sure what you're trying to say. Radar reconnaissance satellites are in lower orbits, not geosynchronous. Any conflict between nuclear armed superpowers wouldn't be small, and avoiding orbital debris wouldn't be a priority.

1.) I don't know of any ASAT missile that can hit satellites in GEO. Because,

2.) All reconnaissance satellites are in much lower orbits. GEO is 35,786km. Huanjing, PRC's military radar sats, are at 650km. USA-234 is at 1,107km.

USA's big demonstration of its anti-satellite capability was at only 250km. Sandbagged, perhaps, but we don't know. Again I feel it is much, much more likely that both sides will simply try to take over the other side's space assets, rather than using kinetic anti-satellite weapons that litter space with tiny chunks of garbage.

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