In 1973 Syria and Egypt launched a surprise attack against Israel on Yom Kippur, their highest holy day, so there is precedence for the Muslims to attack Israel during Jewish holidays. The eight days of Hanukkah began at sundown on December 21, 2008. Three days later the Negev of southern Israel was hit by more than 60 mortar shells and rockets from Iran's proxy in Gaza, so there is precedence for Iran to attack Israel during Jewish holidays. Ancient Iran (Persia) sought to destroy the Jews when queen Esther intervened and king Xerxes turned it into a day the Jews could destroy their enemies (which is celebrated as the holiday called Purim).
Iran and its proxies, Hamas and Hezbollah, have vocalized their desire to annihilate the Jews, and have been lobbing Katusha rockets at Israel for years. On May 18, 2009 PM Netanyahu met with Pres. Obama about Iran's threats. Obama said that within a year he would know if discussions/diplomacy had not worked with Iran, and then would consider sanctions. Sanctions have already failed. The next day Israel's air force held large-scale exercises simulating war with Iran in preparation for the real one. Obama's actions may have emboldened Iran's plans to destroy Israel.
The next Jewish feast is Weeks (Shavuot), which was called Pentecost in Greek, which will begin at sundown on May 28, 2009. It celebrates the day God spoke His Ten Commandment to the Hebrews as fire from Mount Sinai, and was fulfilled the day Christ's disciples (with "cloven tongues like as of fire" on their heads) spoke the wonders of God in various languages to the Jews from many nations in Jerusalem.
Satan wants to be "like the Most High" and often counterfeits His miracles. Satan's proxies in the middle-east are the Sunnis (beast of the sea, Rev. 13), the Shia (beast of the earth), and the Wahhabis (the "whore", Rev. 17).
Revelation 13:11-13 "And I beheld another beast coming up out of the earth; and he had two horns like a lamb, and he spoke as a dragon. And he exercises all the power of the first beast before him, and causes the earth and them which dwell therein to worship the first beast, whose deadly wound was healed. And he does great wonders, so that he makes fire come down from heaven on the earth in the sight of men,"
Daniel 8:20 "The ram which you saw having two horns are the kings of Media and Persia."
Mahmoud Ahmadinejad has consistently stated his goal is to create enough chaos to hasten the reign of the Mahdi, and has asserted that was why he was made president. When asked by the Ayatollah Khamenei, "What if he doesn't come by then [the end of your term]?" Ahmadinejad adamantly replied, "I assure you; I really believe this. He will come soon." [Ahmadinejad: The Secret History of Iran's Radical Leader by Kasra Naji, p.92] Iran will hold presidential elections on June 12, 2009.
North Korea successfully conducted another nuclear test on May 25, 2009, and the CIA didn't have a clue that it had occurred, and had to rely on Russia's confirmation. Hours later, North Korea successfully test-fired three short-range, ground-to-air missiles which could carry nuclear warheads. The CIA was caught off-guard at Iran's revolution in the 1970's, and Obama made it clear the US is in a 'wait and see' stance for the remainder of the year.