Our sages use an interesting expression, hevlei Moshiach, or the labor pains of Moshiach. They compare the coming of Moshiach to childbirth: the closer the happy occasion nears, the more painful and more frequent the contractions are. As each day passes, we see how true this is.
Increasing global antisemitism, the recent terrorist attacks in France, the unprecedented spread of ISIS like a raging cancer that's infecting the entire globe and now with our northen border on ultra-high alert after the IDF hit on Hezbolla's leaders in the field yesterday are all "labor pains" that are accelarating us toward Moshiach.
Halacha doesn't allow us to conjecture about Moshiach's ETA; but, we are certainly allowed to quote our sages. My esteemed friend and colleague Rabbi Pinchas Winston quotes the Zohar and says that the techiat hametim, the resurrection of the dead, will not be an overnight process. Rather, it will be a gradual process where the souls who so merit will come back to life over a period that will last between 210-214 years. Yet, this cannot happen until Moshiach comes.
Take into consideration that the world as we know it, according to both the Gemara and the Zohar, will only last for 6,000 years after which we enter a period of yom shekulo Shabbat, a world-to-come existence of perfect peace and harmony when man won't even have an evil inclination. Since we are already in the year 5775, there are only 225 years left. In order to begin the resurrection process, Moshiach must come within the next 11-15 years at latest. Since Moshiach has so much work to do, he won't be coming a day, week, month or year before resurrection begins. That means that we can truly expect him any day...
There's much more to say on this topic, but as I'm sorely strapped for time, G-d willing I'll continue on this week's emuna broadcast on Wednesday.