Wednesday marks 700 days since the start of Russia's invasion of Ukraine.
Ukrainian President Volodymyr Zelenskyy condemned Russia's ongoing large-scale missile attacks, and vowed to counterattack using long-range weapons.
The Ukrainian military announced on Tuesday that it intercepted 21 of the 41 missiles, including ballistic missiles, that Russian forces fired at targets across Ukraine.
Zelenskyy said in a video message that more than 200 buildings were damaged and 130 people were hurt. He added, "Unfortunately, 18 people were killed."
The president also called Russia "a typical terrorist." He said, "And let them in Russia know that the Ukrainian character is capable of being long-range enough to retaliate."
The US think tank, the Institute for the Study of War, said on Tuesday that the latest Russian strikes involved various types of missiles, such as cruise, ballistic and ground-to-air, but no drones.
The institute said, "Russian forces are likely continuing to experiment with new strike packages with different means of penetrating Ukrainian air defenses."
It added, "Russia is likely attempting to acquire more ballistic missiles from abroad, including from Iran and North Korea, because ballistic missiles may be more successful in striking Ukrainian targets in some circumstances."