Ukraine War Could Drag On for Years, Former Ambassador SaysAlmost 10 months after Russian President Vladimir Putin's troops invaded Ukraine, a former ambassador to the U.S. is warning that the war could drag on for years.Ukrainian diplomat Valeriy Chaly, who was Ukraine's ambassador to the United States from 2015 to 2019, warned that the newly promised Patriot advanced missile system from the U.S. won't be enough, and that Ukraine needs more weapons to win the war.Ahead of Ukrainian President Volodymyr Zelensky's stop in Washington on Wednesday, Secretary of State Antony Blinken unveiled a $1.85 billion military package for Kyiv that included a Patriot missile system.The Ukrainian leader has for months been asking the U.S. for stronger weapons to shoot down Russian missiles, as Putin's forces have been bombarding Ukraine's energy infrastructure, causing blackouts across the country.The ground-based Patriot missile defense system would be the most advanced surface-to-air missile Washington has provided to Kyiv since the war began."