Israel said Sunday it would watch the two Iranian warships which have docked in Syria "very closely" in case they approached its waters, dpa reported.
The warships had docked Saturday in the Syrian port of Tartous, north-west of the capital Damascus, after passing through the Suez Canal into the Mediterranean Sea.
"If the boats come near our territorial waters, we will monitor them very closely," Foreign Ministry spokesman Yigal Palmor told dpa.
The vessels - a destroyer and a supply ship - are to provide maritime training to Syria's navy under an agreement between the two countries, according to Iran's Press TV.
The transit was the second of the canal in a year by Iranian warships, Iran's navy chief said.
Last February, the Iranian frigate Alvand and the supply ship Kharg entered the Mediterranean through the Suez Canal for the first naval visit since 1979.
Iranian Rear Admiral Habibollah Sayari told the official news agency IRNA that the latest initiative was to show Iran's naval power and "deliver the message of peace to the nations of the region and the world."
Israel last year criticized Egypt for allowing the Iranian vessels to use the waterway.
Iran is locked in fresh tensions with world powers over its controversial nuclear programme.