Shipping date of February 16, 1988 per Direct Currents #1 (January 1988). Corrected shipping date of February 9, 1988 per Direct Currents #2 (February 1988), confirmed from copyright registration.
This issue has variants:
Justice League International [Guy Gardner; Blue Beetle [Ted Kord]; Martian Manhunter; Mister Miracle [Scott Free]; Big Barda; Booster Gold [Michael Carter]; Captain Atom; Rocket Red; Green Flame [Beatriz da Costa]; Ice Maiden [Tora Olafsdotter]; Oberon; Maxwell Lord]; Lord Manga (villain); L-Ron (villain); Superman (cameo); Gnort
Synopsis
The Cluster, an amalgamated spaceship colony, enters Earth orbit and offers them an ultimatum: Trade with them or be ravaged. The JLI is alerted.