Defense

Rising seas will ruin Kwajalein Atoll site where 1,300 work and live

Leaving the decision to strike to the president alone is dangerous

Online video serves the Islamic State and other terrorist organizations as a powerful tool for recruiting new members and inciting violence. A potential fix remains curiously in limbo

For the sake of the planet, the U.S. nuclear arsenal should not be on high alert

The U.S. military is taking steps to limit the chance that worsening droughts, rising seas and melting Arctic ice will hasten uprisings that threaten national interests

Nations must agree on penalties with sharp teeth to discourage state-sponsored cyber attacks

Seven enlightening studies from social psychology hold vital lessons for policy makers—and the rest of us

The psychology of group dynamics goes a long way toward explaining what drives ordinary people toward radicalism

New estimates of the number of civilian deaths resulting from nuclear attacks by one superpower on the strategic forces of the other further undermine the rationale for such attacks

The U.S. may be committing itself to preparing for a war limited to attacks on military bases, with relatively few civilian casualties. Would the casualties really be few, and could the war stay limited?