Here is the translation of what he tweeted in Hebrew:

"The world is much safer today because Israel was able to kill the three top leaders of Islamic Jihad terrorism in Gaza. The operation was successful and the terrorists only understand an aggressive response, not negotiations. 

As you have seen the supporters of terrorism in the Arab world no longer care about them. Let's keep the citizens safe on both sides in Israel and Gaza and continue on the road to success."

While many of the replies were angry, many in Arabic agreed with him.