On-sale date from the ComicList Database as compiled by Jim Cowling with information from one distributor, plus a week delay for newsstand distribution.
This issue is a variant of X-Men: The Early Years (Marvel, 1994 series) #4 [Direct].
Magneto and his new Brotherhood of Evil Mutants steals a freighter and uses it to take over the South American nation of Santo Marco. The X-Men invade and take the country back. Xavier is caught in an explosion and loses his mental powers.