The developments mark a worrying escalation in the conflict that has repeatedly ratcheted up international tensions.

North Korean troops have joined Russian marines and airborne units in a number of battles in Ukraine, according to reports.

WASHINGTON (AP) — The Pentagon will send Ukraine at least $275 million in new weapons, U.S. officials said Tuesday, as the ...

Downing Street has condemned the “depraved” Russian leadership’s decision to lower the threshold for using nuclear weapons, ...

President Vladimir Putin has updated Russia’s nuclear doctrine, two days after his US counterpart Joe Biden granted Ukraine ...

Kremlin spokesperson Dmitry Peskov said Tuesday that Russia's new nuclear weapons doctrine means Ukraine's use of Western rockets "can prompt a nuclear response." ...

Pentagon Press Secretary Sabrina Singh also declined a request to comment on the US permission to use ATACMS missiles for deep strikes on Russia ...

Far from “America First,” his foreign policy advisers largely believe in using military force abroad—at the risk of ...

The 4-year-old document is known as Russia nuclear doctrine and President Vladimir Putin has signed a revamped version lowers ...

Ukraine's ATACMS missile strike on Russia escalates tensions, prompting fears of nuclear retaliation as the conflict ...

Vladimir Putin signalled on Tuesday he was ready to start a nuclear war after Ukraine struck Russia with Western missiles for ...

United States Indo-Pacific Command Samuel Paparo emphasized he was speaking about "the stocks of the United States of America, and the high end capabilities of the United States of America" ...