Ukrainian President Volodymyr Zelensky on Sunday thanked President Biden for “unprecedented” support the U.S. has provided as the country’s fight against Russia enters the rough winter months. “I had a phone call with U.S. President Joseph Biden and thanked for the unprecedented defense and financial assistance that the U.S. provides to Ukraine,” Zelensky said in a post on his Telegram account. “This not only helps succeed on the battlefield, but also maintains the stability of the Ukrainian economy.” The Ukrainian president also thanked the U.S. for aid to restore Ukraine’s battered energy system and “emphasized the importance” of shoring up...