"I do not wage war unless it is a last resort and I don't risk the lives of our soldiers and citizens just to get applause," Netanyahu said in an interview with Kan Reshet Bet Radio. "We will probably have no choice but to set out on a big campaign, a war against the terror forces in Gaza."
He added: "I won't start it one minute before we are ready, and we are preparing for a different war." He later flew to Russia for a meeting with President Vladimir Putin.
It was Netanyahu's first major interview with a mainstream media outlet in a frenetic campaign in which he has been dictating the agenda with a dizzying array of manoeuvres.
Just this week, he alleged fraud in Arab voting areas, without providing evidence, and pushed for legislation to place cameras in polling stations on election day. He also claimed to have located a previously unknown Iranian nuclear weapons facility and vowed to annex the heart of the West Bank if he wins re-election.
His pledge to extend Israeli sovereignty over the Jordan Valley sparked international condemnation. Stephane Dujarric, spokesman for the United Nations Secretary-General, said it would be a "serious violation of international law".
Jordan, one of only two Arab states to have reached a peace agreement with Israel, condemned Netanyahu's "catastrophic" announcement. "It will not only undermine the two-state solution, which the whole world sees as the only path toward resolving this conflict, but it will kill the whole peace process," Jordan's Foreign Minister Ayman al-Safadi said.
Saudi Arabia, a regional power that has grown closer to Israel in recent years, condemned the move.
Netanyahu said it was important to act now as US President Donald Trump prepares to unveil his Mideast peace plan after the elections on Tuesday in Israel. The move was widely viewed in Israel as Netanyahu's latest stunt to draw in right-wing voters in a hard-fought campaign.
In a statement issued on Thursday, the Russian Foreign Ministry said it took note of Netanyahu's announcement and the "highly negative reaction in the Arab world". It said it would share its concerns with Israel since "implementation could trigger a sharp escalation in the region and undermine hopes for establishing a lasting peace between Israel and its Arab neighbours".
Before his departure to Sochi, Netanyahu said the focus of his talks with Putin would be to promote the "joint goal" of removing Iranian forces from neighbouring Syria. Netanyahu and Putin have met regularly in recent years to co-ordinate military activities in Syria.
Netanyahu has for years argued for aggressively countering Iran's nuclear programme and its regional activities, and often takes pride in having a strong working relationship with both Putin and Trump.
However, Netanyahu's clout in Washington appeared to take a hit this week with the firing of one of his like-minded allies in the Administration, National Security Adviser John Bolton, amid reports that Trump was considering meeting with Iranian President Hassan Rouhani and easing sanctions against Iran.
In his radio interview, Netanyahu defended his record.
"Where did this strong sanctions policy against Iran come from if not from the struggle that I led? Indeed, I have had influence on Trump," he said. "You can't tell the President of the United States with whom he should meet, but there is not one person who has influenced more, and continues to influence, the aggressive stance against Iran than me, and everyone knows that."
- AP
