The Russian delegation has threatened to call off the negotiations in Istanbul in response to the Ukrainian Security Service’s operation known as Spider’s Web.

Axar.az informs, citing Ukrainska Pravda, the source in the Ministry of Defence said that the talks are progressing, but Moscow is deliberately focusing on minor issues to delay the process.

"There is definitely progress in the negotiations. But the secondary nature of the issues that Russia wants to discuss indicates that they are deliberately delaying and looking for any mechanisms to do that in the course of the negotiations," the source said.

Additionally, the source noted that the recent Operation Spider's Web conducted by the Security Service of Ukraine, which targeted 41 Russian military aircraft, including strategic bombers and an A-50, has also affected the course of the talks.

"The Russian side clearly stated that there is a risk of disruption of any negotiations and continuation of hostilities because of such steps," the source said.