French President Emmanuel Macron proposed on Tuesday that an international coalition fighting against Islamic State in Iraq and Syria be widened to include the fight against the Palestinian militant group Hamas in Gaza.

Speaking alongside Israeli Prime Minister Benjamin Netanyahu in Jerusalem, Macron stressed that France and Israel share terrorism as their "common enemy", but gave little detail on how the U.S.-led coalition of dozens of countries could be involved.

"France is ready for the international coalition against Daesh in which we are taking part for operations in Iraq and Syria to also fight against Hamas," he told reporters, referring to Islamic State and promising not to leave Israel alone.

Macron also warned against the risks of a regional conflict, stressing the fight against Hamas "must be without mercy but not without rules".