Russia is preparing to fabricate a reason to invade Ukraine and launch an attack in the coming days, the US says.
On Thursday, President Joe Biden said military action could begin imminently, but stressed that a diplomatic solution was still possible.
His top foreign policy official later listed several ways Moscow could stage justification for an invasion.
Russia said the claims were "baseless" and accused the US of stoking tensions.
It has repeatedly denied any plan to invade its western neighbour.
Moscow insists it is moving troops away from the Ukrainian border, but that claim has been fiercely contested by Western powers.
"We have reason to believe they are engaged in a false flag operation to have an excuse to go in," Mr Biden told reporters outside the White House.
Latest Stories
-
DAMC, Free Food Company, to distribute 10,000 packs of food to street kids
1 hour -
Kwame Boafo Akuffo: Court ruling on re-collation flawed
1 hour -
Samuel Yaw Adusei: The strategist behind NDC’s electoral security in Ashanti region
1 hour -
I’m confident posterity will judge my performance well – Akufo-Addo
2 hours -
Syria’s minorities seek security as country charts new future
2 hours -
Prof. Nana Aba Appiah Amfo re-appointed as Vice-Chancellor of the University of Ghana
2 hours -
German police probe market attack security and warnings
2 hours -
Grief and anger in Magdeburg after Christmas market attack
2 hours -
Baltasar Coin becomes first Ghanaian meme coin to hit DEX Screener at $100K market cap
3 hours -
EC blames re-collation of disputed results on widespread lawlessness by party supporters
4 hours -
Top 20 Ghanaian songs released in 2024
4 hours -
Beating Messi’s Inter Miami to MLS Cup feels amazing – Joseph Paintsil
4 hours -
NDC administration will reverse all ‘last-minute’ gov’t employee promotions – Asiedu Nketiah
4 hours -
Kudus sights ‘authority and kingship’ for elephant stool celebration
4 hours -
We’ll embrace cutting-edge technologies to address emerging healthcare needs – Prof. Antwi-Kusi
5 hours