Vice Premier Moshe Ya'alon said on Friday he feared Iran did not believe it faced a real military threat from the outside world because of mixed messages from foreign powers, including the United States.
"We have an exchange of views, including with our friends in the United States, who in our opinion, are in part responsible for this feeling in Iran," he told Israel's 100FM radio station.
"There are many cracks in the ring closing tighter on Iran. We criticize this," he said, also singling out UN Secretary General Ban Ki-moon for traveling to Tehran this week.
Prime Minister Binyamin Netanyahu has said he will speak out about the dangers of Iran in an address next month to the UN General Assembly in New York.