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

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 ...

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

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

President Vladimir Putin formally lowered the threshold for Russia’s use of its nuclear weapons Tuesday, a move that follows U.S. President Joe Biden’s decision to let Ukraine strike targets inside ...

President Vladimir Putin on Tuesday formally lowered the threshold for Russia’s use of its nuclear weapons, a move that ...

Russian President Vladimir Putin formally lowered the threshold for his country's use of nuclear weapons Tuesday, after the U ...

Putin lowered the threshold for Russia's use of nuclear weapons Tuesday, a move that follows Biden's decision to let Ukraine ...

Also, prosecutors called for a four-year freeze on Trump’s Manhattan case. Here’s the latest at the end of Tuesday.