The warning was unusual for its specificity as Russian air attacks have become a common, near-daily occurrence in Ukraine.

The combined total of nuclear warheads held by 9 countries exceeds 12,100 units, but according to data from Arms Control, ...

US scientists made a breakthrough in fusion energy, discovering a new fuel mix that could improve efficiency and reduce ...

Russian President Vladimir Putin has approved changes formally lowering the threshold at which his country can consider a ...

The escalated tensions in the Eastern European country come after Biden authorized Ukraine to use U.S.-supplied missiles ...

U.S. Defense Secretary Lloyd Austin said Wednesday that the Biden administration will allow Ukraine to use American-supplied ...

The U.S. embassy in Ukraine says Russia could launch a "significant air attack" on Kyiv after U.S.-made missiles were fired ...

Futures for the Dow, S&P 500 and Nasdaq are rising Wednesday as the stock market awaits an earnings report from AI chip maker Nvidia.

Hungary is moving toward allowing an increase in the cost of a contract with Russia to expand its sole nuclear power station ...

The warning arrived amid fears that the war could escalate, a day after Ukraine's military first launched U.S.-made ...

The U.S. Embassy in Kyiv closed on Wednesday after receiving "specific information of a potential significant air attack," it ...