PARIS NATO air attacks against Serbian sites Nov. 21 and 23 pitted allied aircraft from four nations against vintage Warsaw Pact-type missile defenses during the first large-scale coordinated multinational strikes in the 44-year history of the alliance.

WASHINGTON The U.S. and Ukraine have signed a series of civil space, defense conversion and trade agreements, aimed at using high technology to shore up Kiev's shattered economy and head off political/military instability in central Europe.

COLORADO SPRINGS A B-lB squadron completed a congres-sionally mandated operational readiness test with an 84.6% mission capable (MC) rate, demonstrating the bomber's ability to operate at wartime tempos from an austere location.

WASHINGTON In a secret operation, a team of U.S. nuclear engineers and military personnel dispatched to Kazakhstan retrieved a cache of 600 kilograms of highly enriched, weapons grade uranium, enough to make two to three dozen nuclear bombs.

LAJES FIELD, AZORES The U.S. Air Combat Command is upgrading facilities at Lajes Field, a joint U.S.-Portugal airfield in the Azores, to reflect its new importance as an interim staging area for operations in the Mideast and Mediterranean regions.