The Israeli premier's remarks came two weeks after Israel reportedly carried out air strikes near Damascus to prevent transfer of weapons to Hezbollah, the Lebanese Shiite ally of Syrian President Bashar al-Assad.
The claims about the strikes have neither been confirmed nor denied by the Israeli government.
Netanyahu made the comments at the beginning of his cabinet's weekly meeting today as he was apparently responding to reports in the British newspaper 'Sunday Times' that said that Syria has missiles aimed at Tel Aviv.
Reconnaissance satellites have revealed preparations made by the Syrian army to deploy surface-to-surface Tishreen missiles, according to the Sunday Times.
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Syrian President Bashar Assad, the report said, is ready to use these missiles should Israel decide to conduct a strike on Damascus.
"Our policies are to stop, as much as possible, any leaks of advanced weaponry to Hezbollah and other terrorist organisations. We will continue to act to ensure the security interests of the citizens of Israel," Netanyahu said.