Lebanon said on Friday it had signed its first offshore oil and gas exploration and production agreements for two blocks, one of them disputed by neighboring Israel.

Lebanon’s energy minister said the dispute with Israel would not stop Lebanon from benefiting from potential undersea reserves in the contentious Block 9, while consortium operator Total said it would not drill the block’s first well near the disputed zone.

A consortium of France’s Total, Italy’s Eni and Russia’s Novatek signed the agreements for the two blocks, which are among five that Lebanon put up for tender in the country’s much-delayed first licensing round.

Israel and Lebanon have exchanged threats and condemnations over the tender, amid rising tensions over territorial and marine boundaries between them.

“Today, we announce that we have started our petroleum path ... after signing the agreements and launching the exploration activities,” Lebanese Energy Minister Cesar Abi Khalil said at a ceremony in Beirut. The contracts were signed on January 29.

Data suggest there are reserves in Lebanon’s waters, but no exploratory drilling has taken place to estimate their size.

Abi Khalil has said a second offshore licensing round would be held once the first commercially viable discovery was made.

The first exploratory well will be drilled in Block 4 in 2019, said Stephane Michel, Total’s head of exploration and production in the Middle East and North Africa.

The second will be drilled in Block 9 more than 25 kilometers from the maritime border claimed by Israel, he said at the ceremony. “There is no reason not to proceed in this way,” Michel added.

Lebanon has an unresolved maritime border dispute with Israel over a triangular area of sea of around 860 square kilometers that extends along the edge of three of its total 10 blocks.

Total said in a statement the disputed waters comprise 8% of Block 9 and that its exploration “will have no interference at all with any fields or prospects” in the disputed sliver of water.

Lebanese and Israeli officials said David Satterfield, acting assistant U.S. secretary of state, was in Israel last week and in Lebanon this week on a mediation mission. U.S. officials confirmed his travels without detailing his agenda.

Israeli Energy Minister Yuval Steinitz said on Friday a diplomatic resolution to the dispute “is preferable to threats.”

But, speaking to Tel Aviv radio station 102 FM, Steinitz added: “We made two things clear, in a very forthright manner, over the last year. One, don’t provoke us, and don’t explore in or even get close to the disputed line-of-contact.”

Fuad Krekshi, Eni’s executive vice president of the Middle East, said Eni’s entry into Lebanon’s market is a “natural consequence” of its existing role in the Mediterranean region.

Total, with 40%, heads the consortium drilling Lebanon’s first offshore well. Eni also holds 40% and Novatek 20%.

Vyacheslav Mishin, head of Novatek’s new Lebanon office, said the projected global growth in natural gas and LNG consumption was key to his company’s future growth.

“The Middle East market for LNG consumption is forecast to grow by more than 100% by 2030,” he said.

Potential reserves could be used domestically or exported.

Both are attractive for Lebanon which has been short of electricity since its 1975-90 civil war and has an anemic economy battered by war in neighboring Syria and political tensions.

It is also hoped the developing oil and gas industry will create jobs and economic growth. To this end, the EPA contracts say 80% of people employed by the consortium should be Lebanese, with priority given to local suppliers and contractors.

But the commercial viability of potential reserves depends on energy market prices, the ability to secure customers and the cost and politics of building export infrastructure.

“For all the fields in the region, there are commercial, political, and technical challenges that hinder exploitation for the purposes of export,” Tareq Baconi, a European Council on Foreign Relations visiting fellow on MENA energy, told Reuters.

“Many of the challenges for export will be faced by Lebanon as well when, and if, it discovers offshore reserves,” he said.