Velayati made the comments in a message addressed to the Head of the Political Bureau of Hamas Ismail Haniyeh.
In the letter, the Leader’s advisor offered condolences to the Hamas chief over the martyrdom of several of his family members in an Israeli strike on Wednesday.
The Israeli brutal attack once again showed the true nature and brutal face of this child-killing regime, Velayati said, adding that Tel Aviv is resorting to such crimes and the massacre of the defenseless people of Palestine due to its repeated defeats on the battlefield.
The Zionist criminal regime accelerates its isolation at the international level and in public opinion day by day by committing this crimes, he added.
Three sons of Ismail Haniyeh, the political bureau chief of the Palestinian Resistance movement Hamas, have been killed in an Israeli airstrike on a refugee camp in the northern part of the Gaza Strip.
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