Ukrainian President Volodymyr Zelenskyy says he is pressing the United States for more Patriot air defense missiles to counter Russian attacks. He sent a letter to U.S. President Donald Trump and Congress earlier this week but hasn't received a reply. Zelenskyy is eager to secure foreign weaponry as Ukraine battles Russia's full-scale invasion. Zelenskyy said Thursday during a visit to Sweden that Ukraine has plans to buy 20 Gripen fighter jets and receive 16 older models as a donation. Ukrainian drones are also playing a crucial role in limiting Russian advances by targeting supply routes and front-line positions.