What is the South Pars gas field and why is Israel’s attack an escalation?

( Helen Regan and Ivana Kottasová – CNN) An Israeli strike on Iranian facilities in the South Pars gas field marked a significant escalation in the war, prompting a furious Iran to attack major energy facilities of its Gulf neighbors. Energy prices were already spiking because the effective closure of the Strait of Hormuz means oil and gas that is already produced can’t get to its intended customers on time. But the new wave of attacks against energy facilities, including the South Pars, puts added pressure on global supply. This double whammy has sent prices for oil and natural gas even higher and prompted US President Donald Trump to threaten to “blow up” South Pars if Iran didn’t stop. – What is the South Pars gas field and why is Israel’s attack an escalation? | CNN