New Delhi, Jan. 10 -- Ukrainian President Volodymyr Zelensky on Saturday (January 10) said Russia alone is responsible for prolonging the war and warned that Moscow will face "tangible" response for efforts to undermine Ukraine's relations with its international partners.

"Only Russia is the source of this war, the reason the war is being dragged out, and it deserves all retaliatory strikes and pressure for everything it does against life and people, against diplomacy, against partners," Zelensky wrote in a post on X, formerly Twitter.

Zelensky accused Russia of attacking not only Ukrainian lives but also diplomacy and global cooperation, and said Kyiv is closely tracking Moscow's covert activities.

He said Russia continues to resist d...