Russian scientist jump-started Iranian nuclear program

NY Times’ sources in IAEA reveal that an unnamed Russian physicist provided critical assistance to Iran with experiments on detonating nuclear weapons.
On a separate note, it’s probably too late to stop Iran’s nuclear program. The 3,000 centrifuges have certainly enriched enough uranium for several micro-weapons, probably for a tactical one, as well. The assumptions of “enough” uranium presume that the ayatollahs need a 100kt bomb, which they don’t. A small 20kt bomb, even 5kt one with advanced Russian design needs very little uranium and can perfectly wipe out Tel Aviv.