At the meeting of the defence ministers of NATO countries on Wednesday, the UK undertook the obligation to send fighter jets to Romania in 2017, while the USA promised Poland military forces, tanks and artillery - the biggest deployment of the alliance at Russia’s borders since the end of the Cold War, reported Reuters.

Germany, Canada and other NATO allies also promised to send their own forces.

The Secretary General of the organisation Jens Stoltenberg explained that 4 fighter units of nearly 4,000 people are being created in the Baltic states and Eastern Europe. According to him, this comes as a response to the deployment of 330,000 Russian soldiers at the western border of the country.

“This month alone, Moscow deployed ballistic missiles in Kaliningrad and cancelled the agreement with the USA for the utilisation of plutonium,” explained Stoltenberg and accused Russia of continuing to support the separatists in Ukraine.

According to NATO, the missiles in Kaliningrad may hit Poland and the Baltic countries, although the organisation did not comment on whether the Kremlin has deployed nuclear heads in its enclave.

NATO’s aim is to keep its promise made during the summit meeting in Warsaw in July to contain Russia against the background of the fears of Eastern European states after the annexation of the Crimea in 2014.