After more than a week of Russian invasion, only one Ukrainian city, the southern port of Kherson, has fallen to Russian forces.
However, Russian forces continue to surround and attack other cities.
Mariupol, the main port on the Sea of Azov, was surrounded and under heavy bombardment.
Water and power was cut off, and officials say they cannot evacuate the wounded.
Video posted on Twitter from Mariupol, and verified by Reuters, showed parked vehicles burning while non-stop firing reverberated around surrounding apartment blocks.
The northeastern city of Kharkiv has been under attack since the start of the invasion, but defenders are holding out in the heavily shelled city.
While no major assault has been launched on Kyiv, the capital has been shelled, and Russian forces unleashed devastating firepower to break resistance in the outlying town of Borodyanka.
In Washington, a U.S. defense official said Russian troops were still 25 km (16 miles) from Kyiv city centre.
Earlier on Thursday, the British Ministry of Defence said a huge Russia convoy rumbling southwards toward Kyiv, was advancing slowly, partly due to resistance, but also due to logistical issues.
Also on Thursday, Russia and Ukraine negotiators agreed to the need for humanitarian corridors to help civilians escape and to deliver medicines and food to the areas where fighting was the fiercest.
Ukrainian presidential adviser Mykhailo Podolyak said a temporary halt to fighting in select locations was also possible.
The negotiators will meet again next week, the Belarusian state news agency Belta quoted Podolyak as saying.
The United States and Britain announced sanctions on more Russian oligarchs on Thursday, following on from EU measures, as they ratcheted up the pressure on the Kremlin.
Do you have any information you wish to share with us? Do you want us to cover your event or programme? For Adverts or report call/WhatsApp us on +2348072633727 CONTINUE READING…