France, July 18 -- A month after they agreed a preliminary deal aimed at ending their war, fighting has intensified, with Tehran accusing Washington of hitting an airport, railway station and bridges.

Iran retaliated Saturday with strikes on an oil facility in Kuwait as well as a power and water plant, authorities in the Gulf state said, while in Bahrain the army said air defences repelled a wave of Iranian attacks.

"Iran will no longer limit itself to retaliatory, like-for-like responses... and no political border will be safe," said Major General Mohsen Rezaei, a senior military adviser to Iran's supreme leader, according to state media.

He said Tehran would resume "full-scale offensive operations" if US strikes continue for another ...