NATO has been on high alert since Russia invaded Ukraine more than three and a half years ago, but a recent spike in the alliance’s airspace violations has security experts increasingly concerned tha...

Cooper's comments were echoed by other Western ministers in the Security Council, who suggested the multiple incidents could not be considered an accident.

The United Nations Security Council will hold an emergency meeting Monday to discuss Russian fighter jet incursions into NATO member Estonia's airspace, the Estonian government and the UN said. Why it matters: NATO countries have reported several such violations in recent weeks.

UK Foreign Secretary Yvette Cooper has told the UN that UK and NATO forces will confront unauthorised planes in Europe's skies, after recent Russian violations of airspace.

Defence Secretary, John Healey MP, said: ‘RAF Typhoons have now flown their first air defence mission over Poland, sending a clear signal: NATO airspace will be defended.