We have been very clear about what the missile defense system in Europe is for.

The budget for America's missile defense system is about $10 billion.

Without a missile defense system, the president is forced to back down.

"And an element of the security is the missile defense system."

The Clinton administration at first denied the need for a national missile defense system.

There have been two recent, successful tests of the missile defense system.

We have a missile defense system to protect us against nuclear weapons.

"And soon people are obsessed next with missile defense systems."

Russia has been developing missile defense systems since the early 1960s.

But Russia says the missile defense system is a threat to its national security.

Both men agree for now that Washington should press ahead with research and testing of a missile defense system.

His intention is to build a national missile defense system.

Of course one may create missile defense systems, build up military muscles.

"Deployment of a missile defense system would bring nothing to security in Europe," he said.

He said China was also concerned about other countries alliances and missile defense systems.

"This is the most complete air missile defense system we've ever done anywhere in the world," he said.

He would approach carefully, with every missile defense system on-line.

You talked about the establishment of a regional missile defense system.

A missile defense system has long been a article of faith among Republican conservatives.

It might make sense, though, as part of a working missile defense system, the authors argue.

The Obama administration doesn't appear enthusiastic about the missile defense system.

"But everybody understands the missile defense system needs to be comprehensive."

Clearly, reasonable people will disagree about which missile defense systems make sense.

Sensors from the American missile defense system were an important part of this mission, though, he said.

And of course, we're pursuing a missile defense system that will also protect the American people.