MOSCOW (Reuters) — President Vladimir Putin on Tuesday delivered a warning to the West over Ukraine by suspending a landmark nuclear arms control treaty, announcing that new strategic systems had been put on combat duty, and threatening to resume nuclear tests. Nearly a year after ordering an invasi...

The Pentagon's rejection of China's claim that a balloon floating over nuclear sites is a 'civilian' airship raises further questions about its surveillance capabilities.

'We must also open deliveries of long-range missiles to Ukraine, it is important - we must expand our cooperation in artillery,' Zelensky said, also adding Ukraine needed jets.

If a nuclear bomb were to strike the US, cities might not have enough emergency services to aid the wounded.

A Chinese fighter jet came within 20 feet of a U.S. air force plane in the South China Sea last week and forced it to take evasive maneuvers to avoid a collision, the U.S. military said on Thursday.

While Russia is outwardly considering a prisoner swap to send American basketball star Brittney Griner back to the United States, the State Department is tamping down expectations.

The remark was posted by Yevgeny Prigozhin's catering company, a favorite of Putin, on the eve of the U.S. midterm elections in response to a request for comment from a Russian news site.

A US Air Force tanker appeared to draw a penis in the sky on Tuesday night nearby Russia's Syrian naval base as the war in Ukraine persists.

Russia told the U.S. on Tuesday that it was about to start exercises with its nuclear forces, at a time of heightened tension over Ukraine amid claims and counterclaims about dirty bombs.

Dmitry Peskov, Putin's spokesman, was asked whether occupied regions of Ukraine are under Moscow's 'nuclear umbrella' and said they are 'protected at the same level as the rest of Russia.

A US airborne operation involving multiple helicopters left one person dead in a government-controlled area of Syria's northeast.

North Korea has fired another ballistic missile towards Japan, South Korea's Joint Chiefs of Staff have said.

A new study suggests the number of Chinese researchers relocating to China from the United States is increasing despite the end of the controversial China Initiative earlier this year. The Asian American Scholar Forum (AASF) published a report titled “Caught in the Crossfire: Fears of Chinese-American Scientists” on Sept. 3. In its study, the association presented the results of its national academic climate survey, showing that the number of Chinese researchers leaving the U.S. has grown since the U.S. Department of Justice launched its China Initiative in 2018.