NATO Secretary-General Jens Stoltenberg says that Russia has not given "any real explanation" for its extended violation of Turkish airspace. As a result, he concluded that the issue "does not look like an accident."
Russia began to carry out airstrikes in Syria last Wednesday. Stoltenberg has since called on Moscow to be careful not to further escalate the tensions between Russia and NATO.
Reports have shown that the strikes have killed a number of civilians, though Russian President Vladimir Putin denies the charges.