SEOUL: South Korea said it had lodged a protest with representatives of China and Russia on Wednesday (Dec 10), a day after Seoul said those countries' warplanes had entered its air defence zone.

NATO fighter jets have intercepted a slew of Russian military aircraft flying with their transponders off near the Polish airspace. Authorities said they intercepted the Russian aircraft that were

South Korea deployed military aircraft after seven Russian warplanes and two Chinese aircraft entered an air identification zone maintained by Seoul, escalating tensions in a region already strained by an ongoing diplomatic rift between Beijing and Tokyo.

South Korea's military said it had scrambled fighter jets when Chinese and Russian military planes entered and left its air defence zone on Tuesday.

NATO fighter jets were scrambled and air defense systems put on alert in Poland in response to Russia’s latest overnight drone and missile strikes in Ukraine.

In August, a WC-135R aircraft, deployed in the United Kingdom, was tracked flying over the Barents Sea, west of Russia's archipelago of Novaya Zemlya, where Russia operates a launch site for testing the Burevestnik nuclear-powered cruise missile.

U.S. B-52s and Japanese jets flew over the Sea of Japan, showcasing their alliance amid tensions between Tokyo and Beijing.