Speaking alongside Hollande, Netanyahu once again warned that Iran could soon have enough fissile material to develop a bomb within weeks and that Israel would not be bound to what he called a "bad deal." At the same time, he thanked Hollande for leading a tough stance that has blocked a deal thus far.
The warm atmosphere comes at a time when Israel increasingly finds itself at odds with its top ally, the United States, over the talks with Iran.
Netanyahu has tried to play down his differences with the Obama administration as a disagreement between the "best of friends," but he went out of his way to charm Hollande peppering his remarks with French and embracing him often.
Hollande, accompanied by his companion Valerie Trierweiler, was welcomed by an honor guard at Ben-Gurion International Airport near Tel Aviv. With trumpets playing in the background, a line of politicians, religious leaders and other dignitaries greeted the French leader. Later, he visited Israel's national cemetery as well as Yad Vashem, the national Holocaust memorial, before a meeting and dinner with Netanyahu.
"Israel sees in France a true friend," Netanyahu said at the ceremony.
Initially a strong ally of Israel, France was an early provider of weapons to the country and was instrumental in establishing Israel's nuclear program. But relations soured after the 1967 Mideast war, when France imposed an arms embargo and began adopting more policies critical of Israel.
Many Israelis have traditionally viewed France as biased in favor of the Palestinians, and reports of rising anti-Semitism toward the French Jewish community at 600,000 the third-largest in the world has only fanned the flames.
Relations warmed significantly under Hollande's predecessor, Nicolas Sarkozy, and Hollande's tough stance on the Iranian nuclear program has made him popular with Israelis.
The six powers negotiating with Iran the U.S., Russia, China, France, Britain and Germany failed to reach an agreement earlier this month. The U.S. has expressed optimism that an initial deal can be wrapped up at the next round of talks, providing a six-month period to reach a final agreement.
Netanyahu believes the sanctions seriously have weakened Iran and that providing any relief, even temporarily, will be lead to the crumbling of international pressure. He has urged the world to step up, not ease, the pressure on Iran until it completely dismantles what he says is a military nuclear program.
Netanyahu's strong objections have raised tensions with the U.S., which said his concerns are premature.
Meanwhile, Hollande has struck a tone far more amenable to Israeli ears.
"The goal is that Iran renounces nuclear weapons forever," he said Sunday. "We are against nuclear proliferation, and in Iran there has been a will even once expressed to enrich uranium to military capabilities."
Israel views a nuclear-armed Iran as a threat to its very existence, citing its repeated calls for the destruction of the Jewish state, Tehran's long-range missile program and its support for violent anti-Israel groups like the Hezbollah in Lebanon.
Netanyahu has repeatedly denounced the potential agreement between the six powers and Iran and hinted at readiness to attack Iran if it appears close to getting a bomb, saying Israel is ready to "defend itself."
Invoking the memory of the Holocaust, Netanyahu said it was his obligation to prevent it from happening again.
"It is my duty to prevent anyone from credibly threatening or executing another Holocaust against the Jewish people," he said. "When someone says they are out to destroy you we have learned in our Jewish history to take them seriously."
Netanyahu said the Iran talks would dominate discussions with Hollande, as well as meetings with Russian President Vladimir Putin in Moscow on Wednesday. U.S. Secretary of State John Kerry is scheduled to visit Jerusalem on Friday.
Newly restarted Israeli-Palestinian peace talks are also on the agenda and Hollande is to meet Palestinian President Mahmoud Abbas on Monday in the West Bank.
