NATO held an emergency meeting late Monday, after Russia violated Turkish airspace twice in two days during airstrikes on Syria.br In the first incident, an SU-30 fighter aircraft had entered Turkish airspace "for a few seconds" because of bad weather, Moscow stated Saturday.br However, since then, yet another incident has been reported, a Turkish foreign ministry official stated Monday night - and warned that Russia would  "be responsible for any undesired incident that may occur" if it happened again.br NATO Secretary-General Jens Stoltenberg stated Tuesday that Russia has not given "any real explanation" for its extended violation of Turkish airspace.