Sen. Barack Obama claims that a "history of weak sanctions" on countries like North Korea and Iran has created "this slow drift towards nuclear weapons becoming a fact of life."
Obama, D-Ill., told ABC News' Charlie Gibson that as president he would "sound the alarm" about the danger of Iran's nuclear ambitions.
"If Iran gets a nuclear weapon, it triggers a potential arms race, a nuclear arms race in the Middle East, that is not only life-threatening to Israel but it is a profound, a game-changing shift when it comes to our national security," he told Gibson.
WATCH MORE OF CHARLIE'S INTERVIEW WITH BARACK OBAMA IN ISRAEL ON "WORLD NEWS" WEDNESDAY AT 6:30 PM ET ON ABC
The Democratic presidential candidate said he would not take...