June 28 (UPI) — Ukrainian long-range weapons struck two major Russian oil refineries on Sunday as President Vladimir Putin promised to ramp up security against Kyiv’s attacks in an address to United Russia party members.

Ukrainian President Volodymyr Zelensky announced in a social media post that the Slavyansk oil refinery in the Krasnodar region and another facility in the Yaroslavl region were hit, accompanying those claims were video showing buildings ablaze with thick smoke pouring into the sky.

The Slavyansk refinery is about 186 miles from the front lines of the Russian invasion in eastern Ukraine, while the Yaroslavl facility significantly farther away, at approximately at 434 miles.

Zelensky said Ukrainian forces celebrated the nation’s Constitution Day with the attacks, which continued Kyiv’s recent ramping up of its strikes on Russian infrastructure located far behind the front lines through the use of sophisticated long-range weaponry.

“We continue our operations that weaken Russia’s ability to wage this war,” Zelensky said. “Each of our long-range sanctions means fewer resources serving Russia’s war machine, and another step toward peace.”

Sunday’s strikes appeared to be a continuation of Zelensky’s newly announced 40-day “influence campaign” of using intermediate- and long-range weapons against Russia’s oil infrastructure in a bid to bring Putin to the negotiating table.

The Russian-installed occupation authorities in the Crimean Peninsula announced a regional state of emergency on Friday amid gas shortages shortly after the initiation of campaign.

In Moscow, meanwhile, Putin on Sunday obliquely admitted Ukraine’s long-range strike campaign was affecting Russians’ lives, but then quickly dismissed those concerns.

In a speech to the 23rd congress of his United Russia Party, Putin vowed to improve security and defenses against Ukrainian attacks.

“The congress of United Russia, our leading political party, is taking place at a difficult time — it would be safe to say that it is a pivotal moment for our country and a period of radical and systemic transformation of the entire world,” the president said, while pointing the finger at “Western elites.”

“Once again, Russia is confidently repelling any attempts to deter our progress. We have sufficient resources, means, and political will, and nobody should doubt that,” he declared.

Putin did not mention the wide-scale gasoline shortages being felt around the country but vowed to ensure the security of Russia.