President Vladimir V. Putin of Russia and the Israeli prime minister, Benjamin Netanyahu, disagreed here on Monday over the level of threat to Israel from Syria, backed by Iran.

Mr. Netanyahu said that Iran and Syria had sought to provide modern weapons to the militant group Hezbollah to open a second front against Israel.

But Mr. Putin differed, saying the Syrian Army was in such a dire situation that it could not possibly take part in a war against Israel. He also sought to reassure Mr. Netanyahu that increased Russian military support for Syria would not have a negative impact on Israel. […]