Reuters is now reporting that the Islamic States has claimed responsibility for the tragic plane crash in Egypt that killed more than 200 Russians. According to the report:

A militant group affiliated to Islamic State in Egypt claimed responsibility for the downing of a Russian passenger plane that crashed in Egypt's Sinai peninsula on Saturday, the group said in a statement circulated by supporters on Twitter. These gentlemen are taking credit for the downed Russian airliner ... The claim of responsibility was also carried by the Aamaq website which acts as a semi official news agency for Islamic State. "The fighters of the Islamic State were able to down a Russian plane over Sinai province that was carrying over 220 Russian crusaders. They were all killed, thanks be to God," the statement circulated on Twitter said.

Egyptian authorities said earlier that the plane was not shot down, and ruled out foul play. But perhaps they spoke too soon. We are still waiting for the Russian government to release a comprehensive statement.

But what if ISIS is responsible? Considering the glaring direct and indirect ties that ISIS has with Saudi Arabia, Turkey, Qatar, and, we'll say it: the United States, this would basically be an act of war against Russia.

It really is too soon to say. But foul play, despite what the Egyptians say, is clearly still a possibility.