Speaking in an interview with Israel's Channel 2 on Saturday, Mofaz criticized his hawkish rival, Prime Minister Benjamin Netanyahu, for his "manipulative" posing of a nuclear Iran as an "existential threat" to Israel.
Mofaz also warned of the "catastrophic" consequences of a possible strike on Iran's nuclear facilities.
"We need to ask ourselves… two questions," he said, adding, "Will an early attack by Israel change Iran's strategic situation regarding the nuclear program. My answer is no. And the second question is, will an early strike by Israel, in the current circumstances, in the existing situation in the Middle East…will an early attack lead to war?"
"My answer is that the probability for this is very high," he stated.
Israel and its close ally the United States accuse Iran of seeking a nuclear weapon, while they have never presented any corroborative document to substantiate their allegations. Both Washington and Tel Aviv possess advanced weapons of mass destruction, including nuclear warheads.
Iran vehemently denies the charges, insisting that its nuclear program is for peaceful purposes only. Tehran stresses that the country has always pursued a civilian path to provide power to the growing number of Iranian population, whose fossil fuel would eventually run dry.
Iran has warned that it would target Israel and its worldwide interests in case it comes under attack by the Tel Aviv.
The United States has also always stressed that military action is a main option for the White House to deter Iran's progress in the field of nuclear technology.
In response, Iran has warned that in case of an attack by either the US or Israel, it will target not just Israel, but also the worldwide interests of both the US and Israel, including 32 American bases in the Middle East, and close the strategic Strait of Hormuz.
An estimated 40 percent of the world's oil supply passes through the waterway.