The Bering Strait.
The USA and Russia lie each side of the Bering Strait
Russia and the United States (Alaska).
The Bering strait separates Asia from North America, and also separates Russia from the USA.
The Bering Strait is between Cape Dezhnev, Chukotka Autonomous Okrug, Russia, the easternmost point of the Asian continent and Cape Prince of Wales, Alaska, USA, the westernmost point of the North American continent,
Asia (Russia) from North America (Alaska, USA)
You can not drive from the UK to USA. The only possibility would be is if the proposed Bering Strait Bridge Dezneva (Russia) to Wales (Alaska) ever actually got built. But it seems unlikely due to the relationship between Russia and the USA!
USA and Russia. North America and Asia.
Siberia (Russia) in Asia from Alaska (USA) in North America
They share a common border in the Diomede Islands of the Bering Strait between Alaska and Siberia. Little Diomede (US) is 2.4 miles from Big Diomede (Russia) with the border halfway between them along the International Date Line. A winter ice bridge makes it possible to walk from one country to the other,
The cold war between the USA and Russia
There is no more USSR. It is Russia. The nearest USA state to Russia is Alaska. The very first Alaskans were people who crossed the Bering Strait, going from West to East, and who went from Russia to Alaska.
About fifteen.