Israel blames the militant group for "reopening" the conflict on their northern border. But airstrikes have been undermining the fragile ceasefire for more than a year.
Sky's economics and data editor explains how events in the Middle East are already having an impact and what an extended period of disruption to energy flows could mean.
The moment American casualties were confirmed on Sunday, the war with Iran ceased to be something abstract. Three personnel were killed and five others seriously wounded in a strike on a US base in Kuwait.