Such defense systems are extremely costly” with “their effectiveness often being questionable,” one expert said.

Israel’s missile defense system is effective in close quarters. That model won’t help the U.S.

Its nuclear programme is a rare area where Iran might claim to retain the initiative. Late last year Iran was producing ...

The United States is estimated to have spent more than $400 billion on the kinds of antimissile goals that the president now ...

Instead, Trump’s order demands the deployment of “space-based interceptors” — a web of satellites, some equipped with lasers. It then calls for the development of another layer of lower-altitude ...

Donald Trump said a new deal with Iran would be "nice," but the country's foreign minister said it was "obviously not enough" ...

The missile deployments come months after Iran’s Supreme Leader, Ayatollah Khamenei, urged officials to “master artificial ...

President Trump on Monday night signed an executive order to create a next-generation missile defense shield, which the White ...

When it comes to protecting U.S. territory from missiles fired by such nuclear-powered countries as Russia, China, and North ...

An executive order said the United States faced a “catastrophic threat” from advanced aerial weapons. But a defense system ...

NICOLE GRAJEWSKI is a Fellow in the Nuclear Policy Program at the Carnegie Endowment for International Peace and an Associate ...

With China, Russia, and Islamists scratching at the door, peace costs money. America is upgrading its needed nuclear arsenal, ...