JERUSALEM — Amid growing concern in Israel and the West that Russia may soon deliver a sophisticated air defense system to Syria, Israeli and Russian officials confirmed on Saturday that Prime Minister Benjamin Netanyahu would meet with President Vladimir V. Putin as early as this week.

An Israeli official said that Mr. Netanyahu had spoken with Mr. Putin by telephone last week, while the Israeli prime minister was visiting China, and the two agreed to meet in Moscow.

The discussions are expected to focus on Russia’s sale to Syria of advanced S-300 antiaircraft missile batteries, which could limit the ability of the United States and other nations to fly over Syrian airspace. They could also complicate airstrikes like the two in Syria this month, believed to have been carried out by Israel.

The Wall Street Journal reported last week that Israel had provided the United States with intelligence that Syria had already begun making payments on a 2010 contract with Russia to purchase four S-300 batteries, with 144 missiles, and that the first deliveries were expected to be made this summer.