Damage has been reported to sites at Natanz, Isfahan, Arak and Tehran, in what Israel says is a bid to stop Iran from building an atom bomb

Israel says it is determined to destroy Iran’s nuclear capabilities in its military campaign, but that it also wants to avoid any nuclear disaster in a region that is home to tens of millions of people and produces much of the world’s oil.

Fears of catastrophe rippled through the Gulf on Thursday when the Israeli military said it had struck a site in Bushehr on the Gulf coast – home to Iran’s only nuclear power station – only to later say the announcement was a mistake.

Below are details on the damage caused so far by Israel’s attacks, and what experts are saying about the risks of contamination and other disasters.

Israel has announced attacks on nuclear sites in Natanz, Isfahan, Arak and Tehran itself. Israel says it aims to stop Iran building an atom bomb. Iran denies ever seeking one.