Israel’s decision to attack Iran’s nuclear program on June 12 might go down in history as the start of a significant regional war, and the inflection point that led Iran to finally acquire nuclear weapons.

The retaliatory strikes came on Saturday, a day after Israel killed top Iranian military leaders and scientists and destroyed an aboveground nuclear enrichment plant near Natanz.

On the heels of Israel's strikes on Iran over its nuclear program, here's a look at which nations currently possess nuclear weapons.