France, April 17 -- EU foreign policy chief Josep Borrell has said that Brussels was starting work on expanding sanctions against Iran after Tehran's attack on Israel, ahead of two day European leaders' summit that gets underway in the Belgian capital this Wednesday.

Speaking after an emergency online meeting of EU foreign ministers on Tuesday, Borrell said the bloc would look to toughen measures against Iran's supplies of weaponry - including drones - to Russia and proxy groups around the Middle East.

"Some member states propose the adoption of expanded restrictive measures against Iran," Borrell said.

The EU's top diplomat said he was requesting his service "start the necessary work related to the sanctions".

EU foreign ministers he...