Russia said on Thursday that a new U.S. ballistic missile defence base in northern Poland will lead to an increase in the overall level of nuclear danger, but Warsaw said "threats" from Moscow only strengthened the argument for NATO defences.

Russia has threatened to attack a new US defense base in Poland with “advanced weapons” — just hours after reportedly launching an intercontinental ballistic missile at Ukraine on Thursday. Moscow leveled the warning after saying the opening of the ballistic missile defense base,

The United States opened a new air defence base in northern Poland on Wednesday, an event the European nation's president said showed the country was secure as a member of NATO even as Russia wages war in neighbouring Ukraine.

Russia has said it has identified a US missile base in Poland which it claims raises the prospect of a nuclear war between Moscow and Nato. Moscow branded the facility in the town of Redzikowo near the Baltic coast a provocation on Thursday,

Last week, a new US air defence base was opened in the northern Polish village of Redzikowo, near the Baltic Sea. Russia responded with threatening language. The US base is part of a NATO missile shield designed to intercept short- and medium-range ballistic missiles.

Russian Foreign Ministry spokeswoman Maria Zakharova called the NATO anti-missile base in Poland "another provocative step," accusing the U.S. of "projecting American power" onto other territories. Zakharova also threatened that the base could be targeted with Russia's latest weapons if necessary,

The Russians have revised their nuclear weapons usage doctrine. This is in response to the permission given to Ukraine to launch missiles from the USA on the aggressor's territory. The list of potential targets includes,