The US drone strikes are "proof of the cooperation between Italy and the United States, aimed at conducting defensive operations," Gentiloni was quoted by the Rainews24 television channel as saying.
The decision most likely relates to the anti-terrorist operations in the region in general, not only in Libya, the foreign minister recalled.
Daesh terrorist group, occupying vast territories in Syria and Iraq, has been increasing its presence in Libya, which has been locked in a conflict since the overthrow of long-time leader Muammar Gaddafi.
In January, media reported that US President Barack Obama was making plans to open a third front against Daesh in Libya, following military operations in Syria and Iraq started by a US-led coalition in 2014.