What are the primary security challenges facing the world in the 21st Century?

Answer 1

The very same ones as in the first century. The only difference is in the technology. My answer comes in the form of a question. Do I want to regress?

Answer 2

I think the the primary security which is the main problem is that of our own country, government, such as CIA, FBI; and the U.S. Army Forces. We the people are daily giving our freedom up in the name of SECURITY. The people behind the scene running our country are the people whom have all the money and the power to manipulate all U.S. Governmental Agentcies. In resualts of giving up our FREEDOMS; we now are monitored (of freedom of movement is no lower private) Taxation is out of control (The adverage persons wage are paid to the U.S. Reserve Bank which is private enterprise and not GOVERMENTAL) Freedom of speech is sensored to the extent that you may be held for treason. So the question is what is our primary concern? Our own COUNTRY police starting from the President on down the chain of command. I love my country the U.S.A.; however dispise the manipulaters behind the scene; for everything is centered around the Dollar. The people holding the monies/power have control of our rights, polluted our water, air; and even our food. One of every male has one sort or another of cancer; as well as one of every three females; the kicker is that cooperate monies (the same people resposiable for the cancer also has the cure or owns the right to the medication that is being use'd for the cure.
Joe

Answer 3

terrorism, uncontroled immigration and Iranian nutcases trying to take over the middle east.