The best ongoing reporting on the search for the missing aircraft is from the website Aviation Herald.
One of the interesting side notes is the case of the stolen passports — two Iranian men used stolen passports to board the plane enroute to the Netherlands via Beijing. There is no evidence that they were terrorists. In fact, they appear to be freedom-seekers fleeing an oppressive government.
It is “much easier to get a stolen passport than most people think”. Some 10,000 passports are lost or stolen every year in Thailand alone. Perhaps a third of the people who board aircraft around the world, do so without their passports being checked against the Interpol stolen passport database.
So far as I know, no airliner in the last, say, five years, has been hijacked, blown up, or otherwise interfered with by terrorists using fake passports. This makes me ask the Fermi question, about alien intelligences: “Where are they?” If it’s so easy to do, where are the tens, hundreds, nay, thousands, of sweaty jihadistas who want to blow up airplanes as a political statement? No, they don’t have a very good chance of boarding a US-bound flight, because we do 100% checking, but that wouldn’t keep them from attacking aircraft of friendly countries, or aircraft enroute to friendly countries.
Could it be that the threat is not nearly as high as DHS/TSA wants us to believe? That they are pumping up the threat just so they can keep us in line and their budgets growing? Surely not.