It’s a new day in Europe. Gone are the halcyon years of unshakeable American commitment to Europe’s defense against Russia.

President Donald Trump on Saturday ordered U.S. airstrikes on Iran-backed Houthis in Yemen, while issuing a new warning ...

After just a few weeks in the White House, the self-appointed peace-giver has stoked war, accelerated the nuclear arms race and alienated US allies ...

For decades, the U.S. has led the race to clean, limitless nuclear fusion energy. Now China is catching up, spending twice as ...

U.S. President Donald Trump says he has ordered airstrikes against Iran-backed rebels in Yemen, and issued a warning to ...

Trump also warned Iran to stop supporting the rebel group, promising to hold the country “fully accountable” for the actions ...

Talk of replacing the American nuclear umbrella over Europe with the small British and French nuclear armories is in the air, ...

The multibillion-dollar AUKUS deal, through which the US promised to deliver a batch of nuclear submarines to Australia, is ...

Offshore wind, one of many energy sources that was going to help New York meet incredibly ambitious goals to decarbonize its ...

Newsweek readers have expressed strong opinions on critical issues this week — from sweeping cuts at the Department of ...

U.S. President Donald Trump launched large-scale military strikes against Yemen's Iran-aligned Houthis on Saturday over the ...