Poland has ‍temporarily ​closed two airports in Rzeszow ​and ⁠Lublin after ​the country's armed forces scrambled fighter jets due to ‍Russian strikes ​on Ukraine, according to the Polish Air ‌Navigation Services ‍Agency. Earlier on Saturday, powerful explosions rocked Ukraine's capital as authorities warned that Kyiv was under threat of missile attack. Follow our liveblog for the latest updates.