https:// www.timesofisrael.com/idf-reveals-operation-chess-its-effort-to-thwart-iranian-reprisals-from-syria/

The Israeli military on Friday acknowledged that it attacked the T-4 air base in central Syria last month — killing at least seven Iranian revolutionary guards — as well as its ongoing intelligence and air campaign to prevent Tehran from carrying out reprisals for the strike.

The preemptive effort by the Israel Defense Forces is known collectively as “Operation Chess.”