Iran’s Revolutionary Guards (IRGC) said on Wednesday they had hit dozens of US military facilities in Bahrain and Kuwait in response to American strikes, in a statement carried by state broadcaster IRIB.

“In an initial response to this aggression, the IRGC Navy and Aerospace Force carried out a joint missile and drone operation, striking 85 key US military facilities” in the two countries, while also shooting down an MQ-9 drone, the statement said.

The statement came after the US military unleashed a new wave of strikes against Iran on Tuesday and revoked a licence allowing the country to sell oil after three tankers were hit by projectiles in the Strait of Hormuz, putting pressure on an already fragile ceasefire.

After a day in which huge crowds mourned Iran’s assassinated supreme leader Ayatollah Ali Khamenei in the holy city of Qom, US Central Command (Centcom) said it hit over 80 targets in a series of strikes intended to impose what it called “heavy costs”.

The military command said it struck more than 60 small boats of the Islamic Revolutionary Guard Corps in an effort to degrade Iran’s ability to attack commercial shipping.