My enemy's enemy is... my friend?

One has to wonder what 'moderate' 'Palestinian' President Mahmoud Abbas Abu Mazen, now in the 11th year of his four-year term, was thinking. Abu Mazen has condemned the killing of an ISIS supporter in Gaza by Hamas. This is from the fourth link.

Hamas, which promotes political Islam, has mounted occasional crackdowns on more radical groups that chafe at its engagement with Abbas and truces with Israel. Such groups support the broader struggle led by Islamic State and al Qaeda.

From its seat in Ramallah in the Israeli-occupied West Bank, the Palestinian cabinet deplored what it called Honnor's "execution".

"Hamas must respect the law and civil rights," said the cabinet statement, published by the official Palestinian news agency Wafa. "It must not mess with the souls of people. It must cease abolishing security and order and stop trespassing on the authorities of the government and the judiciary."

If I were Abu Mazen, my reaction to Hamas and ISIS killing each other would be 'faster, faster....' Maybe I haven't been in the Middle East long enough. The rules here are apparently immutable.