ISIS' affiliate in Egypt, the Sinai Province, called Saturday on the Muslim Brotherhood to relinquish their adherence to "peaceful resistance" to the regime of Egyptian President Abdel Fattah al-Sisi, and take up arms against the government in order to oust it.In a video released on Saturday, an ISIS fighter urges the Muslim Brothers in Egypt to "use the experience they gained from ousting the previous apostate regime of Hosni Mubarak to topple the current apostate regime of President al-Sisi."ISIS’ call to Egypt's Muslim Brothers to join forces in the war against Sisi's regime is an unprecedented move on the part of the terror organization that comes amid the upcoming fifth anniversary of the 2011 uprising that toppled Mubarak. Until now, ISIS has denounced the political Islamic movement that has branches all around the Arab world as a "heretic" movement that collaborates with Western crusaders, claiming that it is subjected to the rules of democratic regimes and does not strive to replace them with rules based on Sharia law.The ISIS jihadist speaking in the video also urges all ISIS fighters to take action against ISIS’ enemies and claims that the fight against the apostate ruler of Egypt is just one chapter in ISIS' operations in the last decade.According to the jihadist, "ISIS is now stronger than it was before and there is no reason for us not to liberate al-Aksa, to turn our eyes to Constantinople (Istanbul’s ancient name) and our swords to Rome."In addition to provoking Egypt, the ISIS video is also likely an attempt to provoke the West, and especially the US, since the jihadist is photographed with a big Toyota jeep behind him. It appears to be a well-planned attempt by ISIS to ridicule recent US efforts to put an end to the group’s use of Toyota's jeeps in the organization's fighting.