The test is a milestone in the worldwide hypersonic arms buildup that Russia and China kicked off in the 2000s.

The announcement comes shortly after Washington lifted restrictions on Ukraine using U.S.-made longer-range missiles.

Russia accused Ukraine of firing a barrage of US-made long-range missiles for the first time to attack its Bryansk region ...

The reentry technology is required to ensure a missile's warhead can withstand extremely high temperatures during reentry to ...

Biden on Sunday authorized Ukraine to use the Army Tactical Missile System (ATACMS) inside Russia, though the White House has yet to publicly confirm the approval. ATACMS, which can strike at targets ...

Kremlin spokesperson Dmitry Peskov said Tuesday that Russia's new nuclear weapons doctrine means Ukraine's use of Western ...

The Russia-Ukraine war, expected by both sides to last only days or weeks, has now reached its 1,000th day.

Ukrainian troops have launched an attack against a Russian border region with six US long-range missiles, Moscow has said. It ...

MOSCOW: Russia has arrested two suspects believed to be behind the assassination of a senior naval officer who was killed by ...

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

Elon Musk has increasingly been seen with President Elect Trump in the days after the election. The Hill's Cate Martel breaks ...