South Korea says it fired warning shots after Russian military planes entered its airspace.
Fighter jets were also scrambled in response.
According to the Defence Ministry in Seoul, it's the first time an aircraft from Moscow has violated the country's territorial sky.
It is planning to summon officials from the Russian Embassy to register formal protests.
At least 14 killed in explosion at weapons depot in Syria
At least 14 people were killed and 11 wounded on Wednesday in an explosion at a temporary site used to store weapons and remnants of war near the Syrian city of Sarmada in Idlib province, state television reported.
US hits five Iranian oil tankers after attack on Navy ships
The United States has destroyed five Iranian oil carriers on Tuesday after the Islamic Revolutionary Guard Corps (IRGC) targeted its navy warship with ballistic missiles "twice over the past two days".
UK flights resume after major air traffic outage but airports warn of more disruption
Flights from British airports resumed early on Wednesday after a major air traffic control failure, but hubs warned that it would take time for operations to return to normal and questions mounted about the reliability of Britain's aviation systems.
Serbia's President Vucic dissolves parliament, calls snap elections
Serbia's President Aleksandar Vucic on Wednesday dissolved parliament and announced snap elections for next month as he seeks to extend his hold on power by running for prime minister.
With large crowds attending, Norway lays King Harald to rest
Norway's King Harald Vwas being laid to rest on Wednesday, in a series of ceremonies marking the culmination of 13 days of national mourning following his death at the age of 89.
