RCP White House reporter HPil Wegmann asked Karoline Leavitt at Thursday's press briefing whether the intelligence used to determine that Iran is getting closer to completing a nuclear weapon comes from American or Israeli sources,

Iran's progress toward having a nuclear weapon is central to the current conflict between Israel and Iran. Before launching recent attacks against Iran's nuclear sites, Israel said it had evidence Tehran was on the brink of building a nuclear weapon.

When Israel launched its series of strikes against Iran last week, it also issued a number of dire warnings about the country’s nuclear program, suggesting Iran was fast approaching a point of no return in its quest to obtain nuclear weapons and that the strikes were necessary to preempt that outcome.