The UK and other NATO allies are vowing to confront Russian planes and drones violating their airspace during a meeting at the United Nations, accusing the Kremlin of risking armed conflict.
It comes amid a growing pattern of Russian incursions in recent weeks, including three Russian fighter jets entering NATO airspace on Friday last week and drones falling into Polish territory on Wednesday.
A Russian military aircraft also entered neutral airspace over the Baltic Sea on Sunday, local time, prompting NATO planes to be flown out to escort it.
Confronting Russia at a meeting of the United Nations Security Council, British Foreign Secretary Yvette Cooper said: "Your reckless actions risk direct armed confrontation between NATO and Russia.
"Our alliance is defensive but be under no illus