The last agreement constraining US and Russian nuclear weapons expires in two months, and Putin has proposed to extend it.

AI has buoyed the stock market and a struggling US economy but warning signs indicate a bubble that everyone will pay for ...

Defense cooperation agreements between the United States and Northern European countries pose a direct threat to Russia’s ...

The water crisis in Tehran reflects not only this summer’s extreme heat but also several consecutive years of reduced ...

In more normal times, the US Justice Department might respond to a Ukrainian investigation of corruption in the state-owned ...

Pakistan’s nuclear threats against India lack credibility and are mainly intended to trigger US intervention. The danger is ...

Over three days in November 1995, climate scientists and IPCC government delegates convened in the Palacio de Congresos in ...

After the recent US-Saudi Investment Summit, the White House heralded $1 trillion in business deals that give the US tech ...

Technologies needed for tracing engineered biothreats back to their sources are advancing rapidly. Here are some ...

Germany hasn't had an indigenous nuclear weapons program since 1945 and nobody in Berlin is asking for a German bomb. So why ...

NASA and the European Space Agency plan to bring samples back from Mars. Could they harbor a type of life that scientists warn could trigger mass extinctions on Earth?

Earlier this fall, as Congress grappled with an end to insurance subsidies that make health care more affordable for millions ...