Russia’s War on Ukraine Could Grind On for Years, Warns PrigozhinKYIV, UKRAINE/WASHINGTON — Russia’s war against Ukraine could continue indefinitely, predicted the leader of the Russian paramilitary organization, Wagner Group. In a video interview, Yevgeny Prigozhin said late Friday that it could take 18 months to two years for Russia to take full control of Ukraine’s eastern industrial heartland of Donbas.\n\nPrigozhin then noted the war could extend for three years if Moscow decides to capture broader territories east of the Dnipro River. He made these comments as the first anniversary of Russia’s invasion of Ukraine is looming. The British Defense Ministry said Saturday that data from the Russian Federal Penal Service suggested a drop-off in the rate of prisoner recruitment by the paramilitary group since December 2022. It said news of the “harsh realities” of service in Wagner in Ukraine has probably “filtered through to inmates and reduced the number of volunteers."\n\nThe British ministry also said Russia is now facing a “difficult choice” of whether to continue “to deplete its forces, scale back objectives, or conduct a further form of mobilization.” The General Staff of Ukraine’s Armed Forces reported Saturday that Moscow is strengthening its grouping of troops near Lyman and Bakhmut in the eastern Donetsk Oblast, and Russian forces are continuing to focus their key efforts on offensive operations in the directions of Kupiansk, Lyman, Bakhmut, Avdiivka, and Novopavlivsk in Ukraine's east and northeast.\n\n'A mixed picture'\n\nIn a briefing Friday at the Center for a New American Security, Celeste Wallander, the assistant secretary of defense for international security affairs, said Russia's military overall "is a mixed picture." She said as Russia continues to suffer losses in Ukraine, it is also applying lessons learned tactically, operationally, and somewhat strategically to adapt. "We're seeing some of those play out in how Russia's conducting, for example, the operations right now in Bakhmut in eastern Ukraine," she said. Wallander emphasized that Russia has "a deep bench of personnel" it can draw upon, and she said the Russian Federation "will remain a militarily capable adversary that we have to right size our plans, our operations and our capabilities to cope with."\n\nShe expressed confidence that "Russia will not achieve its strategic or even its operational objectives, and we are confident that the Ukrainian armed forces are up to the task of defending its country." The White House announced on Friday that U.S. President Joe Biden will travel to Poland on February 20 to meet with Polish President Andrzej Duda and Eastern European allies. Coming just before the first anniversary of Russia's invasion of Ukraine on February 24, Biden's visit "will make it very clear that the United States will continue to stand with Ukraine for as long as it takes," said John Kirby, spokesperson for the White House National Security Council. The announcement came after Russia's heavy shelling Friday, which targeted civilians and civilian infrastructure and caused new power outages. Additional weaponry The attacks on Ukraine Friday renewed calls for more weapons aid to Ukraine. European Council President Charles Michel said the missile barrage constituted war crimes. Western countries that have provided Ukraine with arms have so far refused to send fighter jets or long-range weapons capable of striking deep inside Russia. In an interview with Ani Chkhikvadze of VOA's Georgian Service, senior presidential adviser Mykhailo Podolyak said that negotiations are underway "not only on long-range weapons but also about aviation and not only for fighter jets." Ukraine needs attack aircraft to provide support for armored vehicles on the ground, Podolyak added. "The attack aircraft that can just destroy defensive echelons of the Russian Federation with fire and then [help] our armored vehicles and manpower do the work, [on the ground]," Podolyak said, adding that these discussions may take weeks. President Volodymyr Zelenskyy said Friday he heard from several European Union leaders at the EU summit that they were ready to provide aircraft, hinting at what would be one of the biggest shifts yet in Western support for Ukraine. However, Poland's President Andrzej Duda expressed doubt Saturday about whether his country would be able to supply Ukraine with the fighter jets Zelenskyy says are needed to win the war with Russia. Speaking exclusively to BBC, Duda said sending F-16 aircraft would be a "very serious decision" that is "not easy to take." Lithuanian Defense Minister Arvydas Anusauskas announced Saturday that the first batch of L-70 anti-aircraft guns and ammunition has arrived in Ukraine, while Slovakian Prime Minister Eduard Heger announced Friday that Slovakia can start talks on delivering MiG-29 fighter jets to Ukraine. In an interview with VOA on Friday, Kirby said Washington has "prioritized air defense whether it's short-, medium- or long-range" and it will continue to do so.\n\nKirby did not answer, though, whether the U.S. will provide fighter jets to Ukraine. Contributors to this report include VOA Eastern Europe Bureau Chief Myroslava Gongadze in Kyiv, Ukraine; VOA National Security Correspondent Jeff Seldin in Washington; VOA United Nations Correspondent Margaret Besheer in New York; and Ani Chkhikvadze of VOA's Georgian Service. Some information came from The Associated Press and Reuters.