What do we know about Israel's own nuclear weapons?

Donald Trump has repeated in recent days, often in capital letters on his Truth Social account, that Iran cannot be allowed to obtain a nuclear weapon. 

His view is shared by Benjamin Netanyahu, Israel’s prime minister, who has said that Israel’s surprise attack on Iran, which has killed hundreds since 13 June, is a pre-emptive measure to stop Iran from creating a nuclear weapon. 

Iran denies it is trying to produce nuclear arms, and that its nuclear programme is for civilian purposes.

It is a signatory to the Non-Proliferation Treaty (NPT), which says that states that do not already have nuclear weapons cannot obtain them. 

The NPT gives the International Atomic Energy Agency (IAEA) the power to monitor and verify that non-nuclear states are complying.

Read more: What do we know about Israel's own nuclear weapons?