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.
Israel warns Lebanon of 'heavy price' as week's death toll nears 300
Israel has warned Lebanon of a "very heavy price" if it did not rein in Hezbollah on Saturday, as it pounded the group's strongholds around the country with air strikes and mounted a deadly airborne raid in the east.
Israeli settler fatally shoots Palestinian in West Bank
An Israeli settler has shot dead a 27-year-old Palestinian man in the occupied West Bank on Saturday, the Palestinian Health Ministry said.
Israel carries out rare airborne raid in Lebanon; 16 killed in strikes
Israel launched airstrikes targeting Lebanon's Nabi Chit and nearby towns on Saturday, killing at least 16 people Lebanon's health ministry confirmed.
US skips congressional review to approve arms sale to Israel
The US State Department said on Friday it has approved a sale worth $151.8 million to Israel for munitions and munitions support, without submitting it for congressional review.
